51982090 has 32 divisors (see below), whose sum is σ = 99719424. Its totient is φ = 19441920.

The previous prime is 51982087. The next prime is 51982103. The reversal of 51982090 is 9028915.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27475 + ... + 29305.

It is an arithmetic number, because the mean of its divisors is an integer number (3116232).

Almost surely, 2^51982090 is an apocalyptic number.

51982090 is a deficient number, since it is larger than the sum of its proper divisors (47737334).

51982090 is a wasteful number, since it uses less digits than its factorization.

51982090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 51982090 is about 7209.8606089161. The cubic root of 51982090 is about 373.2082586618.

The spelling of 51982090 in words is "fifty-one million, nine hundred eighty-two thousand, ninety".