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2551401 = 32283489
BaseRepresentation
bin1001101110111001101001
311210121212100
421232321221
51123121101
6130404013
730454326
oct11567151
94717770
102551401
1114929a6
12a30609
136b4408
144a5b4d
15355e86
hex26ee69

2551401 has 6 divisors (see below), whose sum is σ = 3685370. Its totient is φ = 1700928.

The previous prime is 2551397. The next prime is 2551403. The reversal of 2551401 is 1041552.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 301401 = 1500^2 + 549^2 .

It is not a de Polignac number, because 2551401 - 22 = 2551397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551403) 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 5 ways as a sum of consecutive naturals, for example, 141736 + ... + 141753.

22551401 is an apocalyptic number.

It is an amenable number.

2551401 is a deficient number, since it is larger than the sum of its proper divisors (1133969).

2551401 is a wasteful number, since it uses less digits than its factorization.

2551401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283495 (or 283492 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2551401 is about 1597.3105521470. The cubic root of 2551401 is about 136.6447363846.

Adding to 2551401 its reverse (1041552), we get a palindrome (3592953).

The spelling of 2551401 in words is "two million, five hundred fifty-one thousand, four hundred one".

Divisors: 1 3 9 283489 850467 2551401