51265331 has 16 divisors (see below), whose sum is σ = 56866656. Its totient is φ = 45916416.

The previous prime is 51265327. The next prime is 51265349. The reversal of 51265331 is 13356215.

It is not a de Polignac number, because 51265331 - 2² = 51265327 is a prime.

It is a super-2 number, since 2×51265331² = 5256268325079122, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 51265331.

It is not an unprimeable number, because it can be changed into a prime (51265381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163631 + ... + 163943.

It is an arithmetic number, because the mean of its divisors is an integer number (3554166).

Almost surely, 2^51265331 is an apocalyptic number.

51265331 is a deficient number, since it is larger than the sum of its proper divisors (5601325).

51265331 is a wasteful number, since it uses less digits than its factorization.

51265331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its digits is 2700, while the sum is 26.

The square root of 51265331 is about 7159.9812150592. The cubic root of 51265331 is about 371.4849768734.

The spelling of 51265331 in words is "fifty-one million, two hundred sixty-five thousand, three hundred thirty-one".