51790902 has 16 divisors (see below), whose sum is σ = 103882800. Its totient is φ = 17213472.

The previous prime is 51790901. The next prime is 51790939. The reversal of 51790902 is 20909715.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51790901) by changing a digit.

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, 10273 + ... + 14460.

It is an arithmetic number, because the mean of its divisors is an integer number (6492675).

Almost surely, 2^51790902 is an apocalyptic number.

51790902 is an abundant number, since it is smaller than the sum of its proper divisors (52091898).

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

51790902 is a wasteful number, since it uses less digits than its factorization.

51790902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25087.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 51790902 is about 7196.5896089745. The cubic root of 51790902 is about 372.7501483301.

It can be divided in two parts, 517 and 90902, that added together give a palindrome (91419).

The spelling of 51790902 in words is "fifty-one million, seven hundred ninety thousand, nine hundred two".