51050820 has 48 divisors (see below), whose sum is σ = 143519040. Its totient is φ = 13558656.

The previous prime is 51050807. The next prime is 51050833. The reversal of 51050820 is 2805015.

It is an interprime number because it is at equal distance from previous prime (51050807) and next prime (51050833).

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, 14559 + ... + 17721.

It is an arithmetic number, because the mean of its divisors is an integer number (2989980).

Almost surely, 2^51050820 is an apocalyptic number.

It is an amenable number.

51050820 is an abundant number, since it is smaller than the sum of its proper divisors (92468220).

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

51050820 is a wasteful number, since it uses less digits than its factorization.

51050820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444 (or 3442 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 51050820 is about 7144.9856542893. The cubic root of 51050820 is about 370.9661140746.

Adding to 51050820 its reverse (2805015), we get a palindrome (53855835).

The spelling of 51050820 in words is "fifty-one million, fifty thousand, eight hundred twenty".