51466564 has 12 divisors (see below), whose sum is σ = 91079100. Its totient is φ = 25443968.

The previous prime is 51466559. The next prime is 51466567. The reversal of 51466564 is 46566415.

It can be written as a sum of positive squares in 2 ways, for example, as 35402500 + 16064064 = 5950^2 + 4008^2 .

It is not an unprimeable number, because it can be changed into a prime (51466567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71929 + ... + 72640.

It is an arithmetic number, because the mean of its divisors is an integer number (7589925).

Almost surely, 2^51466564 is an apocalyptic number.

It is an amenable number.

51466564 is a deficient number, since it is larger than the sum of its proper divisors (39612536).

51466564 is a wasteful number, since it uses less digits than its factorization.

51466564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144662 (or 144660 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 51466564 is about 7174.0200724559. The cubic root of 51466564 is about 371.9704084836.

The spelling of 51466564 in words is "fifty-one million, four hundred sixty-six thousand, five hundred sixty-four".