55263252624240 has 80 divisors (see below), whose sum is σ = 171510540185376. Its totient is φ = 14720139878400.

The previous prime is 55263252624221. The next prime is 55263252624247. The reversal of 55263252624240 is 4242625236255.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×55263252624240² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 55263252624240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55263252624247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130471621 + ... + 130894500.

Almost surely, 2^{55263252624240} is an apocalyptic number.

It is an amenable number.

55263252624240 is an abundant number, since it is smaller than the sum of its proper divisors (116247287561136).

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

55263252624240 is a wasteful number, since it uses less digits than its factorization.

55263252624240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261367018 (or 261367012 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 48.

The spelling of 55263252624240 in words is "fifty-five trillion, two hundred sixty-three billion, two hundred fifty-two million, six hundred twenty-four thousand, two hundred forty".