5121990 has 24 divisors (see below), whose sum is σ = 13317408. Its totient is φ = 1365840.

The previous prime is 5121989. The next prime is 5122069. The reversal of 5121990 is 991215.

It is a happy number.

5121990 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28366 + ... + 28545.

It is an arithmetic number, because the mean of its divisors is an integer number (554892).

Almost surely, 2^5121990 is an apocalyptic number.

5121990 is an abundant number, since it is smaller than the sum of its proper divisors (8195418).

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

5121990 is a wasteful number, since it uses less digits than its factorization.

5121990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56924 (or 56921 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 5121990 is about 2263.1813891069. The cubic root of 5121990 is about 172.3771021281.

The spelling of 5121990 in words is "five million, one hundred twenty-one thousand, nine hundred ninety".