51135608 has 16 divisors (see below), whose sum is σ = 96525000. Its totient is φ = 25395616.

The previous prime is 51135607. The next prime is 51135611. The reversal of 51135608 is 80653115.

It is a super-2 number, since 2×51135608² = 5229700811059328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51135607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20258 + ... + 22641.

Almost surely, 2^51135608 is an apocalyptic number.

It is an amenable number.

51135608 is a deficient number, since it is larger than the sum of its proper divisors (45389392).

51135608 is a wasteful number, since it uses less digits than its factorization.

51135608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43054 (or 43050 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 51135608 is about 7150.9165846065. The cubic root of 51135608 is about 371.1713740992.

The spelling of 51135608 in words is "fifty-one million, one hundred thirty-five thousand, six hundred eight".