5156401399 has 4 divisors (see below), whose sum is σ = 5322736960. Its totient is φ = 4990065840.

The previous prime is 5156401391. The next prime is 5156401403. The reversal of 5156401399 is 9931046515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5156401399 - 2³ = 5156401391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156401391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83167734 + ... + 83167795.

It is an arithmetic number, because the mean of its divisors is an integer number (1330684240).

Almost surely, 2^5156401399 is an apocalyptic number.

5156401399 is a deficient number, since it is larger than the sum of its proper divisors (166335561).

5156401399 is a wasteful number, since it uses less digits than its factorization.

5156401399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166335560.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 5156401399 is about 71808.0872813084. The cubic root of 5156401399 is about 1727.6227161238.

The spelling of 5156401399 in words is "five billion, one hundred fifty-six million, four hundred one thousand, three hundred ninety-nine".