54991305319 has 4 divisors (see below), whose sum is σ = 54992207944. Its totient is φ = 54990402696.

The previous prime is 54991305283. The next prime is 54991305359. The reversal of 54991305319 is 91350319945.

It is a happy number.

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 54991305319 - 2⁷ = 54991305191 is a prime.

It is a super-2 number, since 2×54991305319² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54991305359) 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, 352752 + ... + 484165.

It is an arithmetic number, because the mean of its divisors is an integer number (13748051986).

Almost surely, 2^54991305319 is an apocalyptic number.

54991305319 is a deficient number, since it is larger than the sum of its proper divisors (902625).

54991305319 is an equidigital number, since it uses as much as digits as its factorization.

54991305319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902624.

The product of its (nonzero) digits is 656100, while the sum is 49.

The spelling of 54991305319 in words is "fifty-four billion, nine hundred ninety-one million, three hundred five thousand, three hundred nineteen".