551401265 has 16 divisors (see below), whose sum is σ = 682027776. Its totient is φ = 427761600.

The previous prime is 551401237. The next prime is 551401271. The reversal of 551401265 is 562104155.

It is a happy number.

It is not a de Polignac number, because 551401265 - 2⁸ = 551401009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8924 + ... + 34386.

It is an arithmetic number, because the mean of its divisors is an integer number (42626736).

Almost surely, 2^551401265 is an apocalyptic number.

It is an amenable number.

551401265 is a deficient number, since it is larger than the sum of its proper divisors (130626511).

551401265 is a wasteful number, since it uses less digits than its factorization.

551401265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25600.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 551401265 is about 23481.9348649126. The cubic root of 551401265 is about 820.0164903485.

The spelling of 551401265 in words is "five hundred fifty-one million, four hundred one thousand, two hundred sixty-five".