51982245 has 48 divisors (see below), whose sum is σ = 104757120. Its totient is φ = 23352192.

The previous prime is 51982223. The next prime is 51982253. The reversal of 51982245 is 54228915.

It is not a de Polignac number, because 51982245 - 2¹⁰ = 51981221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17187 + ... + 19983.

It is an arithmetic number, because the mean of its divisors is an integer number (2182440).

Almost surely, 2^51982245 is an apocalyptic number.

It is an amenable number.

51982245 is an abundant number, since it is smaller than the sum of its proper divisors (52774875).

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

51982245 is a wasteful number, since it uses less digits than its factorization.

51982245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874 (or 2871 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 51982245 is about 7209.8713580757. The cubic root of 51982245 is about 373.2086296051.

The spelling of 51982245 in words is "fifty-one million, nine hundred eighty-two thousand, two hundred forty-five".