51802472 has 16 divisors (see below), whose sum is σ = 98776800. Its totient is φ = 25462000.

The previous prime is 51802469. The next prime is 51802489. The reversal of 51802472 is 27420815.

It is a super-2 number, since 2×51802472² = 5366992210621568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54404 + ... + 55347.

It is an arithmetic number, because the mean of its divisors is an integer number (6173550).

Almost surely, 2^51802472 is an apocalyptic number.

It is an amenable number.

51802472 is a deficient number, since it is larger than the sum of its proper divisors (46974328).

51802472 is a wasteful number, since it uses less digits than its factorization.

51802472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109816 (or 109812 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 51802472 is about 7197.3934170643. The cubic root of 51802472 is about 372.7779035145. Note that the first 3 decimals are identical.

The spelling of 51802472 in words is "fifty-one million, eight hundred two thousand, four hundred seventy-two".