51717536 has 96 divisors (see below), whose sum is σ = 118879488. Its totient is φ = 21934080.

The previous prime is 51717529. The next prime is 51717551. The reversal of 51717536 is 63571715.

It is a super-2 number, since 2×51717536² = 5349407059822592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51717496 and 51717505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502061 + ... + 502163.

It is an arithmetic number, because the mean of its divisors is an integer number (1238328).

Almost surely, 2^51717536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51717536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59439744).

51717536 is an abundant number, since it is smaller than the sum of its proper divisors (67161952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51717536 is a wasteful number, since it uses less digits than its factorization.

51717536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 206 counting only the distinct ones).

The product of its digits is 22050, while the sum is 35.

The square root of 51717536 is about 7191.4905270048. The cubic root of 51717536 is about 372.5740549130.

The spelling of 51717536 in words is "fifty-one million, seven hundred seventeen thousand, five hundred thirty-six".