51985467 has 6 divisors (see below), whose sum is σ = 75090132. Its totient is φ = 34656972.

The previous prime is 51985447. The next prime is 51985489. The reversal of 51985467 is 76458915.

It is not a de Polignac number, because 51985467 - 2⁶ = 51985403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51985447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2888073 + ... + 2888090.

It is an arithmetic number, because the mean of its divisors is an integer number (12515022).

Almost surely, 2^51985467 is an apocalyptic number.

51985467 is a deficient number, since it is larger than the sum of its proper divisors (23104665).

51985467 is a wasteful number, since it uses less digits than its factorization.

51985467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5776169 (or 5776166 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 51985467 is about 7210.0947982672. The cubic root of 51985467 is about 373.2163402722.

The spelling of 51985467 in words is "fifty-one million, nine hundred eighty-five thousand, four hundred sixty-seven".