51057380 has 24 divisors (see below), whose sum is σ = 116968320. Its totient is φ = 18566240.

The previous prime is 51057353. The next prime is 51057397. The reversal of 51057380 is 8375015.

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 7 ways as a sum of consecutive naturals, for example, 115820 + ... + 116259.

It is an arithmetic number, because the mean of its divisors is an integer number (4873680).

Almost surely, 2^51057380 is an apocalyptic number.

It is an amenable number.

51057380 is an abundant number, since it is smaller than the sum of its proper divisors (65910940).

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

51057380 is a wasteful number, since it uses less digits than its factorization.

51057380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232099 (or 232097 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 51057380 is about 7145.4447027459. Note that the first 3 decimals coincide. The cubic root of 51057380 is about 370.9820030357.

The spelling of 51057380 in words is "fifty-one million, fifty-seven thousand, three hundred eighty".