51564536 has 24 divisors (see below), whose sum is σ = 102709920. Its totient is φ = 24264576.

The previous prime is 51564533. The next prime is 51564571. The reversal of 51564536 is 63546515.

It is a junction number, because it is equal to n+sod(n) for n = 51564496 and 51564505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51564533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8840 + ... + 13463.

It is an arithmetic number, because the mean of its divisors is an integer number (4279580).

Almost surely, 2^51564536 is an apocalyptic number.

It is an amenable number.

51564536 is a deficient number, since it is larger than the sum of its proper divisors (51145384).

51564536 is a wasteful number, since it uses less digits than its factorization.

51564536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22343 (or 22322 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 51564536 is about 7180.8450756161. The cubic root of 51564536 is about 372.2062870962.

The spelling of 51564536 in words is "fifty-one million, five hundred sixty-four thousand, five hundred thirty-six".