51525866 has 32 divisors (see below), whose sum is σ = 92016000. Its totient is φ = 21172032.

The previous prime is 51525863. The next prime is 51525883. The reversal of 51525866 is 66852515.

It is not an unprimeable number, because it can be changed into a prime (51525863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72320 + ... + 73028.

It is an arithmetic number, because the mean of its divisors is an integer number (2875500).

Almost surely, 2^51525866 is an apocalyptic number.

51525866 is a deficient number, since it is larger than the sum of its proper divisors (40490134).

51525866 is a wasteful number, since it uses less digits than its factorization.

51525866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926.

The product of its digits is 72000, while the sum is 38.

The square root of 51525866 is about 7178.1519905892. The cubic root of 51525866 is about 372.1132204414.

The spelling of 51525866 in words is "fifty-one million, five hundred twenty-five thousand, eight hundred sixty-six".