51156572 has 24 divisors (see below), whose sum is σ = 93015552. Its totient is φ = 24591600.

The previous prime is 51156571. The next prime is 51156629. The reversal of 51156572 is 27565115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51156571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18947 + ... + 21477.

It is an arithmetic number, because the mean of its divisors is an integer number (3875648).

Almost surely, 2^51156572 is an apocalyptic number.

It is an amenable number.

51156572 is a deficient number, since it is larger than the sum of its proper divisors (41858980).

51156572 is a wasteful number, since it uses less digits than its factorization.

51156572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729 (or 2727 counting only the distinct ones).

The product of its digits is 10500, while the sum is 32.

The square root of 51156572 is about 7152.3822604780. The cubic root of 51156572 is about 371.2220900542. Note that the first 3 decimals are identical.

The spelling of 51156572 in words is "fifty-one million, one hundred fifty-six thousand, five hundred seventy-two".