51717393 has 96 divisors (see below), whose sum is σ = 100101120. Its totient is φ = 26127360.

The previous prime is 51717377. The next prime is 51717397. The reversal of 51717393 is 39371715.

It is not a de Polignac number, because 51717393 - 2⁴ = 51717377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51717397) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 533121 + ... + 533217.

It is an arithmetic number, because the mean of its divisors is an integer number (1042720).

Almost surely, 2^51717393 is an apocalyptic number.

It is an amenable number.

51717393 is a deficient number, since it is larger than the sum of its proper divisors (48383727).

51717393 is a wasteful number, since it uses less digits than its factorization.

51717393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 151 counting only the distinct ones).

The product of its digits is 19845, while the sum is 36.

The square root of 51717393 is about 7191.4805846919. The cubic root of 51717393 is about 372.5737115212.

The spelling of 51717393 in words is "fifty-one million, seven hundred seventeen thousand, three hundred ninety-three".