51717836 has 12 divisors (see below), whose sum is σ = 91857528. Its totient is φ = 25472832.

The previous prime is 51717833. The next prime is 51717871. The reversal of 51717836 is 63871715.

It is a self number, because there is not a number n which added to its sum of digits gives 51717836.

It is not an unprimeable number, because it can be changed into a prime (51717833) 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, 96221 + ... + 96756.

It is an arithmetic number, because the mean of its divisors is an integer number (7654794).

Almost surely, 2^51717836 is an apocalyptic number.

It is an amenable number.

51717836 is a deficient number, since it is larger than the sum of its proper divisors (40139692).

51717836 is a wasteful number, since it uses less digits than its factorization.

51717836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193048 (or 193046 counting only the distinct ones).

The product of its digits is 35280, while the sum is 38.

The square root of 51717836 is about 7191.5113849594. The cubic root of 51717836 is about 372.5747753134.

The spelling of 51717836 in words is "fifty-one million, seven hundred seventeen thousand, eight hundred thirty-six".