55519053719 has 4 divisors (see below), whose sum is σ = 55519535544. Its totient is φ = 55518571896.

The previous prime is 55519053691. The next prime is 55519053739. The reversal of 55519053719 is 91735091555.

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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55519053719 is a prime.

It is a super-2 number, since 2×55519053719² (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 (55519053739) 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, 45164 + ... + 336270.

It is an arithmetic number, because the mean of its divisors is an integer number (13879883886).

Almost surely, 2^55519053719 is an apocalyptic number.

55519053719 is a deficient number, since it is larger than the sum of its proper divisors (481825).

55519053719 is a wasteful number, since it uses less digits than its factorization.

55519053719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481824.

The product of its (nonzero) digits is 1063125, while the sum is 50.

The spelling of 55519053719 in words is "fifty-five billion, five hundred nineteen million, fifty-three thousand, seven hundred nineteen".