51956424 has 64 divisors (see below), whose sum is σ = 155433600. Its totient is φ = 15985728.

The previous prime is 51956417. The next prime is 51956447. The reversal of 51956424 is 42465915.

51956424 is a `hidden beast` number, since 5 + 1 + 9 + 5 + 642 + 4 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6444 + ... + 12059.

It is an arithmetic number, because the mean of its divisors is an integer number (2428650).

Almost surely, 2^51956424 is an apocalyptic number.

51956424 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51956424 is an abundant number, since it is smaller than the sum of its proper divisors (103477176).

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

51956424 is a wasteful number, since it uses less digits than its factorization.

51956424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18531 (or 18521 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 51956424 is about 7208.0804656996. The cubic root of 51956424 is about 373.1468250661.

The spelling of 51956424 in words is "fifty-one million, nine hundred fifty-six thousand, four hundred twenty-four".