55783088500 has 24 divisors (see below), whose sum is σ = 121830266376. Its totient is φ = 22313235200.

The previous prime is 55783088489. The next prime is 55783088509. The reversal of 55783088500 is 588038755.

It can be written as a sum of positive squares in 4 ways, for example, as 1029896464 + 54753192036 = 32092^2 + 233994^2 .

It is a super-2 number, since 2×55783088500² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55783088509) 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, 55782589 + ... + 55783588.

It is an arithmetic number, because the mean of its divisors is an integer number (5076261099).

Almost surely, 2^55783088500 is an apocalyptic number.

55783088500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55783088500 is an abundant number, since it is smaller than the sum of its proper divisors (66047177876).

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

55783088500 is a wasteful number, since it uses less digits than its factorization.

55783088500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111566196 (or 111566184 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 49.

The spelling of 55783088500 in words is "fifty-five billion, seven hundred eighty-three million, eighty-eight thousand, five hundred".