51613572 has 24 divisors (see below), whose sum is σ = 120798496. Its totient is φ = 17152128.

The previous prime is 51613561. The next prime is 51613589. The reversal of 51613572 is 27531615.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2338 + ... + 10425.

Almost surely, 2^51613572 is an apocalyptic number.

It is an amenable number.

51613572 is an abundant number, since it is smaller than the sum of its proper divisors (69184924).

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

51613572 is a wasteful number, since it uses less digits than its factorization.

51613572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13107 (or 13105 counting only the distinct ones).

The product of its digits is 6300, while the sum is 30.

The square root of 51613572 is about 7184.2586256342. The cubic root of 51613572 is about 372.3242346008.

The spelling of 51613572 in words is "fifty-one million, six hundred thirteen thousand, five hundred seventy-two".