55503234240 has 56 divisors (see below), whose sum is σ = 176222771760. Its totient is φ = 14800862208.

The previous prime is 55503234233. The next prime is 55503234247. The reversal of 55503234240 is 4243230555.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55503234233) and next prime (55503234247).

It is a super-2 number, since 2×55503234240² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55503234247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28906975 + ... + 28908894.

It is an arithmetic number, because the mean of its divisors is an integer number (3146835210).

Almost surely, 2^55503234240 is an apocalyptic number.

It is an amenable number.

55503234240 is an abundant number, since it is smaller than the sum of its proper divisors (120719537520).

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

55503234240 is a wasteful number, since it uses less digits than its factorization.

55503234240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57815889 (or 57815879 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 33.

Adding to 55503234240 its reverse (4243230555), we get a palindrome (59746464795).

The spelling of 55503234240 in words is "fifty-five billion, five hundred three million, two hundred thirty-four thousand, two hundred forty".