51708943 has 32 divisors (see below), whose sum is σ = 64733760. Its totient is φ = 40642560.

The previous prime is 51708941. The next prime is 51708947. The reversal of 51708943 is 34980715.

It is a cyclic number.

It is not a de Polignac number, because 51708943 - 2¹ = 51708941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

51708943 is a modest number, since divided by 8943 gives 517 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51708941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153271 + ... + 153607.

It is an arithmetic number, because the mean of its divisors is an integer number (2022930).

Almost surely, 2^51708943 is an apocalyptic number.

51708943 is a deficient number, since it is larger than the sum of its proper divisors (13024817).

51708943 is a wasteful number, since it uses less digits than its factorization.

51708943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 51708943 is about 7190.8930599752. The cubic root of 51708943 is about 372.5534190615.

The spelling of 51708943 in words is "fifty-one million, seven hundred eight thousand, nine hundred forty-three".