5101979401 has 4 divisors (see below), whose sum is σ = 5102125204. Its totient is φ = 5101833600.

The previous prime is 5101979387. The next prime is 5101979413. The reversal of 5101979401 is 1049791015.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 580761801 + 4521217600 = 24099^2 + 67240^2 .

It is a 3-Lehmer number, since φ(5101979401) divides (5101979401-1)³.

It is a cyclic number.

It is not a de Polignac number, because 5101979401 - 2¹³ = 5101971209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5101979431) 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 3 ways as a sum of consecutive naturals, for example, 14581 + ... + 102061.

It is an arithmetic number, because the mean of its divisors is an integer number (1275531301).

It is a Poulet number, since it divides 2^5101979400-1.

Almost surely, 2^5101979401 is an apocalyptic number.

5101979401 is the 58321-st pentagonal number.

It is an amenable number.

5101979401 is a deficient number, since it is larger than the sum of its proper divisors (145803).

5101979401 is an equidigital number, since it uses as much as digits as its factorization.

5101979401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145802.

The product of its (nonzero) digits is 11340, while the sum is 37.

The square root of 5101979401 is about 71428.1415199920. The cubic root of 5101979401 is about 1721.5232810841.

The spelling of 5101979401 in words is "five billion, one hundred one million, nine hundred seventy-nine thousand, four hundred one".