55401073420 has 48 divisors (see below), whose sum is σ = 145050087168. Its totient is φ = 17267866560.

The previous prime is 55401073417. The next prime is 55401073471. The reversal of 55401073420 is 2437010455.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17985822 + ... + 17988901.

It is an arithmetic number, because the mean of its divisors is an integer number (3021876816).

Almost surely, 2^55401073420 is an apocalyptic number.

It is an amenable number.

55401073420 is an abundant number, since it is smaller than the sum of its proper divisors (89649013748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55401073420 is a wasteful number, since it uses less digits than its factorization.

55401073420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35974750 (or 35974748 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

Adding to 55401073420 its reverse (2437010455), we get a palindrome (57838083875).

The spelling of 55401073420 in words is "fifty-five billion, four hundred one million, seventy-three thousand, four hundred twenty".