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30551241 = 371454821
BaseRepresentation
bin111010010001…
…0110011001001
32010111011102110
41310202303021
530310114431
63010452533
7520452450
oct164426311
963434373
1030551241
1116277666
12a294149
136438b76
1440b3b97
152a37346
hex1d22cc9

30551241 has 8 divisors (see below), whose sum is σ = 46554304. Its totient is φ = 17457840.

The previous prime is 30551231. The next prime is 30551251. The reversal of 30551241 is 14215503.

It is an interprime number because it is at equal distance from previous prime (30551231) and next prime (30551251).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30551241 - 26 = 30551177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1454821 = 30551241 / (3 + 0 + 5 + 5 + 1 + 2 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30551201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727390 + ... + 727431.

It is an arithmetic number, because the mean of its divisors is an integer number (5819288).

Almost surely, 230551241 is an apocalyptic number.

It is an amenable number.

30551241 is a deficient number, since it is larger than the sum of its proper divisors (16003063).

30551241 is a wasteful number, since it uses less digits than its factorization.

30551241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454831.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 30551241 is about 5527.3177039139. The cubic root of 30551241 is about 312.6148603909.

Adding to 30551241 its reverse (14215503), we get a palindrome (44766744).

The spelling of 30551241 in words is "thirty million, five hundred fifty-one thousand, two hundred forty-one".

Divisors: 1 3 7 21 1454821 4364463 10183747 30551241