51960249 has 24 divisors (see below), whose sum is σ = 82422912. Its totient is φ = 31281120.

The previous prime is 51960229. The next prime is 51960277. The reversal of 51960249 is 94206915.

51960249 is a `hidden beast` number, since 5 + 1 + 9 + 602 + 49 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-51960249 is a prime.

It is a super-2 number, since 2×51960249² = 5399734952284002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51960229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13872 + ... + 17214.

It is an arithmetic number, because the mean of its divisors is an integer number (3434288).

Almost surely, 2^51960249 is an apocalyptic number.

It is an amenable number.

51960249 is a deficient number, since it is larger than the sum of its proper divisors (30462663).

51960249 is a wasteful number, since it uses less digits than its factorization.

51960249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517 (or 3514 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 51960249 is about 7208.3457880432. The cubic root of 51960249 is about 373.1559817881.

The spelling of 51960249 in words is "fifty-one million, nine hundred sixty thousand, two hundred forty-nine".