51858572 has 6 divisors (see below), whose sum is σ = 90752508. Its totient is φ = 25929284.

The previous prime is 51858557. The next prime is 51858589. The reversal of 51858572 is 27585815.

It is a super-2 number, since 2×51858572² = 5378622979758368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6482318 + ... + 6482325.

It is an arithmetic number, because the mean of its divisors is an integer number (15125418).

Almost surely, 2^51858572 is an apocalyptic number.

It is an amenable number.

51858572 is a deficient number, since it is larger than the sum of its proper divisors (38893936).

51858572 is a wasteful number, since it uses less digits than its factorization.

51858572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12964647 (or 12964645 counting only the distinct ones).

The product of its digits is 112000, while the sum is 41.

The square root of 51858572 is about 7201.2896067302. The cubic root of 51858572 is about 372.9124228071.

The spelling of 51858572 in words is "fifty-one million, eight hundred fifty-eight thousand, five hundred seventy-two".