55906419797 has 4 divisors (see below), whose sum is σ = 55906993536. Its totient is φ = 55905846060.

The previous prime is 55906419781. The next prime is 55906419839. The reversal of 55906419797 is 79791460955.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55906419797 - 2⁴ = 55906419781 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 (55906419727) 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, 100229 + ... + 349082.

It is an arithmetic number, because the mean of its divisors is an integer number (13976748384).

Almost surely, 2^55906419797 is an apocalyptic number.

It is an amenable number.

55906419797 is a deficient number, since it is larger than the sum of its proper divisors (573739).

55906419797 is a wasteful number, since it uses less digits than its factorization.

55906419797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573738.

The product of its (nonzero) digits is 21432600, while the sum is 62.

The spelling of 55906419797 in words is "fifty-five billion, nine hundred six million, four hundred nineteen thousand, seven hundred ninety-seven".