51192830 has 64 divisors (see below), whose sum is σ = 105719040. Its totient is φ = 17708544.

The previous prime is 51192829. The next prime is 51192851. The reversal of 51192830 is 3829115.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 51192793 and 51192802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139307 + ... + 139673.

It is an arithmetic number, because the mean of its divisors is an integer number (1651860).

Almost surely, 2^51192830 is an apocalyptic number.

51192830 is an abundant number, since it is smaller than the sum of its proper divisors (54526210).

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

51192830 is a wasteful number, since it uses less digits than its factorization.

51192830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 51192830 is about 7154.9164914763. The cubic root of 51192830 is about 371.3097724465.

The spelling of 51192830 in words is "fifty-one million, one hundred ninety-two thousand, eight hundred thirty".