55577055523 has 4 divisors (see below), whose sum is σ = 60629515128. Its totient is φ = 50524595920.

The previous prime is 55577055511. The next prime is 55577055563. The reversal of 55577055523 is 32555077555.

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 55577055523 - 2⁹ = 55577055011 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55577055563) 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, 2526229786 + ... + 2526229807.

It is an arithmetic number, because the mean of its divisors is an integer number (15157378782).

Almost surely, 2^55577055523 is an apocalyptic number.

55577055523 is a deficient number, since it is larger than the sum of its proper divisors (5052459605).

55577055523 is a wasteful number, since it uses less digits than its factorization.

55577055523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052459604.

The product of its (nonzero) digits is 4593750, while the sum is 49.

The spelling of 55577055523 in words is "fifty-five billion, five hundred seventy-seven million, fifty-five thousand, five hundred twenty-three".