51424620 has 48 divisors (see below), whose sum is σ = 155067360. Its totient is φ = 12658176.

The previous prime is 51424613. The next prime is 51424651. The reversal of 51424620 is 2642415.

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, 32185 + ... + 33744.

It is an arithmetic number, because the mean of its divisors is an integer number (3230570).

Almost surely, 2^51424620 is an apocalyptic number.

It is an amenable number.

51424620 is an abundant number, since it is smaller than the sum of its proper divisors (103642740).

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

51424620 is a wasteful number, since it uses less digits than its factorization.

51424620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65954 (or 65952 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 51424620 is about 7171.0961505198. The cubic root of 51424620 is about 371.8693320700.

The spelling of 51424620 in words is "fifty-one million, four hundred twenty-four thousand, six hundred twenty".