55420315232 has 24 divisors (see below), whose sum is σ = 110233584216. Its totient is φ = 27424484352.

The previous prime is 55420315217. The next prime is 55420315337. The reversal of 55420315232 is 23251302455.

It is a super-2 number, since 2×55420315232² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8924138 + ... + 8930345.

It is an arithmetic number, because the mean of its divisors is an integer number (4593066009).

Almost surely, 2^55420315232 is an apocalyptic number.

It is an amenable number.

55420315232 is a deficient number, since it is larger than the sum of its proper divisors (54813268984).

55420315232 is a wasteful number, since it uses less digits than its factorization.

55420315232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17854590 (or 17854582 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 55420315232 its reverse (23251302455), we get a palindrome (78671617687).

The spelling of 55420315232 in words is "fifty-five billion, four hundred twenty million, three hundred fifteen thousand, two hundred thirty-two".