51476690 has 16 divisors (see below), whose sum is σ = 93059928. Its totient is φ = 20501376.

The previous prime is 51476627. The next prime is 51476699. The reversal of 51476690 is 9667415.

It can be written as a sum of positive squares in 4 ways, for example, as 44448889 + 7027801 = 6667^2 + 2651^2 .

It is a super-2 number, since 2×51476690² = 5299699226712200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51476699) 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, 8717 + ... + 13376.

Almost surely, 2^51476690 is an apocalyptic number.

51476690 is a deficient number, since it is larger than the sum of its proper divisors (41583238).

51476690 is a wasteful number, since it uses less digits than its factorization.

51476690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22333.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 51476690 is about 7174.7257787319. The cubic root of 51476690 is about 371.9948018312.

The spelling of 51476690 in words is "fifty-one million, four hundred seventy-six thousand, six hundred ninety".