51564304 has 20 divisors (see below), whose sum is σ = 108988560. Its totient is φ = 23438240.

The previous prime is 51564301. The next prime is 51564307. The reversal of 51564304 is 40346515.

It is an interprime number because it is at equal distance from previous prime (51564301) and next prime (51564307).

It is not an unprimeable number, because it can be changed into a prime (51564301) 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 in 3 ways as a sum of consecutive naturals, for example, 146314 + ... + 146665.

It is an arithmetic number, because the mean of its divisors is an integer number (5449428).

Almost surely, 2^51564304 is an apocalyptic number.

It is an amenable number.

51564304 is an abundant number, since it is smaller than the sum of its proper divisors (57424256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51564304 is a wasteful number, since it uses less digits than its factorization.

51564304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292998 (or 292992 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 51564304 is about 7180.8289215104. The cubic root of 51564304 is about 372.2057288831.

The spelling of 51564304 in words is "fifty-one million, five hundred sixty-four thousand, three hundred four".