5208557994 has 24 divisors (see below), whose sum is σ = 11312159040. Its totient is φ = 1732039848.

The previous prime is 5208557993. The next prime is 5208558011. The reversal of 5208557994 is 4997558025.

It is a super-2 number, since 2×5208557994² = 54258152753722608072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5208557994.

It is not an unprimeable number, because it can be changed into a prime (5208557993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337762 + ... + 352845.

It is an arithmetic number, because the mean of its divisors is an integer number (471339960).

Almost surely, 2^5208557994 is an apocalyptic number.

5208557994 is an abundant number, since it is smaller than the sum of its proper divisors (6103601046).

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

5208557994 is a wasteful number, since it uses less digits than its factorization.

5208557994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691034 (or 691031 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The square root of 5208557994 is about 72170.3401266753. The cubic root of 5208557994 is about 1733.4281088792.

The spelling of 5208557994 in words is "five billion, two hundred eight million, five hundred fifty-seven thousand, nine hundred ninety-four".