5121998 has 16 divisors (see below), whose sum is σ = 9297504. Its totient is φ = 2065920.

The previous prime is 5121989. The next prime is 5122069. The reversal of 5121998 is 8991215.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10523 + ... + 10998.

It is an arithmetic number, because the mean of its divisors is an integer number (581094).

Almost surely, 2^5121998 is an apocalyptic number.

5121998 is a deficient number, since it is larger than the sum of its proper divisors (4175506).

5121998 is a wasteful number, since it uses less digits than its factorization.

5121998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21547.

The product of its digits is 6480, while the sum is 35.

The square root of 5121998 is about 2263.1831565298. The cubic root of 5121998 is about 172.3771918729.

The spelling of 5121998 in words is "five million, one hundred twenty-one thousand, nine hundred ninety-eight".