51624474 has 16 divisors (see below), whose sum is σ = 112635360. Its totient is φ = 15643760.

The previous prime is 51624473. The next prime is 51624479. The reversal of 51624474 is 47442615.

51624474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51624473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391029 + ... + 391160.

It is an arithmetic number, because the mean of its divisors is an integer number (7039710).

Almost surely, 2^51624474 is an apocalyptic number.

51624474 is an abundant number, since it is smaller than the sum of its proper divisors (61010886).

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

51624474 is a wasteful number, since it uses less digits than its factorization.

51624474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782205.

The product of its digits is 26880, while the sum is 33.

The square root of 51624474 is about 7185.0173277453. The cubic root of 51624474 is about 372.3504472996.

The spelling of 51624474 in words is "fifty-one million, six hundred twenty-four thousand, four hundred seventy-four".