5121994 has 4 divisors (see below), whose sum is σ = 7682994. Its totient is φ = 2560996.

The previous prime is 5121989. The next prime is 5122069. The reversal of 5121994 is 4991215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4991215 = 5 ⋅998243.

It can be written as a sum of positive squares in only one way, i.e., 3470769 + 1651225 = 1863^2 + 1285^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280497 + ... + 1280500.

Almost surely, 2^5121994 is an apocalyptic number.

5121994 is a deficient number, since it is larger than the sum of its proper divisors (2561000).

5121994 is a wasteful number, since it uses less digits than its factorization.

5121994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560999.

The product of its digits is 3240, while the sum is 31.

The square root of 5121994 is about 2263.1822728185. The cubic root of 5121994 is about 172.3771470005.

The spelling of 5121994 in words is "five million, one hundred twenty-one thousand, nine hundred ninety-four".