51896220 has 48 divisors (see below), whose sum is σ = 152960640. Its totient is φ = 13110336.

The previous prime is 51896219. The next prime is 51896233. The reversal of 51896220 is 2269815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21622 + ... + 23901.

It is an arithmetic number, because the mean of its divisors is an integer number (3186680).

Almost surely, 2^51896220 is an apocalyptic number.

It is an amenable number.

51896220 is an abundant number, since it is smaller than the sum of its proper divisors (101064420).

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

51896220 is a wasteful number, since it uses less digits than its factorization.

51896220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45554 (or 45552 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 51896220 is about 7203.9031087321. The cubic root of 51896220 is about 373.0026426127.

The spelling of 51896220 in words is "fifty-one million, eight hundred ninety-six thousand, two hundred twenty".