55156253267501 has 4 divisors (see below), whose sum is σ = 56935487243904. Its totient is φ = 53377019291100.

The previous prime is 55156253267449. The next prime is 55156253267539. The reversal of 55156253267501 is 10576235265155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55156253267501 - 2²⁶ = 55156186158637 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 (55156253264501) 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, 889616988155 + ... + 889616988216.

It is an arithmetic number, because the mean of its divisors is an integer number (14233871810976).

Almost surely, 2^{55156253267501} is an apocalyptic number.

It is an amenable number.

55156253267501 is a deficient number, since it is larger than the sum of its proper divisors (1779233976403).

55156253267501 is a wasteful number, since it uses less digits than its factorization.

55156253267501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779233976402.

The product of its (nonzero) digits is 9450000, while the sum is 53.

The spelling of 55156253267501 in words is "fifty-five trillion, one hundred fifty-six billion, two hundred fifty-three million, two hundred sixty-seven thousand, five hundred one".