51972633 has 12 divisors (see below), whose sum is σ = 75331620. Its totient is φ = 34528416.

The previous prime is 51972629. The next prime is 51972653. The reversal of 51972633 is 33627915.

51972633 is a `hidden beast` number, since 5 + 19 + 7 + 2 + 633 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39841344 + 12131289 = 6312^2 + 3483^2 .

It is not a de Polignac number, because 51972633 - 2² = 51972629 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51972653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7218 + ... + 12491.

It is an arithmetic number, because the mean of its divisors is an integer number (6277635).

Almost surely, 2^51972633 is an apocalyptic number.

It is an amenable number.

51972633 is a deficient number, since it is larger than the sum of its proper divisors (23358987).

51972633 is a wasteful number, since it uses less digits than its factorization.

51972633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20008 (or 20005 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 51972633 is about 7209.2047411625. The cubic root of 51972633 is about 373.1856249396.

The spelling of 51972633 in words is "fifty-one million, nine hundred seventy-two thousand, six hundred thirty-three".