Search a number
-
+
3250557 = 33120391
BaseRepresentation
bin1100011001100101111101
320010010221000
430121211331
51313004212
6153400513
736425562
oct14314575
96103830
103250557
111920212
121109139
1389a70b
14608869
154431dc
hex31997d

3250557 has 8 divisors (see below), whose sum is σ = 4815680. Its totient is φ = 2167020.

The previous prime is 3250549. The next prime is 3250573. The reversal of 3250557 is 7550523.

It is not a de Polignac number, because 3250557 - 23 = 3250549 is a prime.

It is a super-3 number, since 3×32505573 (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 120391 = 3250557 / (3 + 2 + 5 + 0 + 5 + 5 + 7).

It is a Duffinian number.

3250557 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3250557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3250517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60169 + ... + 60222.

It is an arithmetic number, because the mean of its divisors is an integer number (601960).

Almost surely, 23250557 is an apocalyptic number.

It is an amenable number.

3250557 is a deficient number, since it is larger than the sum of its proper divisors (1565123).

3250557 is a wasteful number, since it uses less digits than its factorization.

3250557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120400 (or 120394 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 3250557 is about 1802.9301151182. The cubic root of 3250557 is about 148.1332650411.

The spelling of 3250557 in words is "three million, two hundred fifty thousand, five hundred fifty-seven".

Divisors: 1 3 9 27 120391 361173 1083519 3250557