51464506 has 4 divisors (see below), whose sum is σ = 77196762. Its totient is φ = 25732252.

The previous prime is 51464503. The next prime is 51464527. The reversal of 51464506 is 60546415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60546415 = 5 ⋅12109283.

It can be written as a sum of positive squares in only one way, i.e., 34117281 + 17347225 = 5841^2 + 4165^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51464503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12866125 + ... + 12866128.

Almost surely, 2^51464506 is an apocalyptic number.

51464506 is a deficient number, since it is larger than the sum of its proper divisors (25732256).

51464506 is a wasteful number, since it uses less digits than its factorization.

51464506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25732255.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 51464506 is about 7173.8766367983. The cubic root of 51464506 is about 371.9654504083.

The spelling of 51464506 in words is "fifty-one million, four hundred sixty-four thousand, five hundred six".