51976365 has 32 divisors (see below), whose sum is σ = 96358656. Its totient is φ = 23431680.

The previous prime is 51976363. The next prime is 51976369. The reversal of 51976365 is 56367915.

51976365 = 715² + 716² + ... + 804².

It is a happy number.

It is not a de Polignac number, because 51976365 - 2¹ = 51976363 is a prime.

It is a super-2 number, since 2×51976365² = 5403085037226450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51976363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4275 + ... + 11055.

It is an arithmetic number, because the mean of its divisors is an integer number (3011208).

Almost surely, 2^51976365 is an apocalyptic number.

It is an amenable number.

51976365 is a deficient number, since it is larger than the sum of its proper divisors (44382291).

51976365 is a wasteful number, since it uses less digits than its factorization.

51976365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6869.

The product of its digits is 170100, while the sum is 42.

The square root of 51976365 is about 7209.4635722778. The cubic root of 51976365 is about 373.1945571752.

The spelling of 51976365 in words is "fifty-one million, nine hundred seventy-six thousand, three hundred sixty-five".