55215242412400 has 120 divisors (see below), whose sum is σ = 154090612814624. Its totient is φ = 18620596915200.

The previous prime is 55215242412373. The next prime is 55215242412431. The reversal of 55215242412400 is 421424251255.

It is a self number, because there is not a number n which added to its sum of digits gives 55215242412400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161466327 + ... + 161807926.

Almost surely, 2^{55215242412400} is an apocalyptic number.

55215242412400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55215242412400 is an abundant number, since it is smaller than the sum of its proper divisors (98875370402224).

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

55215242412400 is a wasteful number, since it uses less digits than its factorization.

55215242412400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323274339 (or 323274328 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 37.

Adding to 55215242412400 its reverse (421424251255), we get a palindrome (55636666663655).

The spelling of 55215242412400 in words is "fifty-five trillion, two hundred fifteen billion, two hundred forty-two million, four hundred twelve thousand, four hundred".