55188533355 has 32 divisors (see below), whose sum is σ = 95028614208. Its totient is φ = 27248332800.

The previous prime is 55188533347. The next prime is 55188533359. The reversal of 55188533355 is 55333588155.

It is not a de Polignac number, because 55188533355 - 2³ = 55188533347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 55188533298 and 55188533307.

It is not an unprimeable number, because it can be changed into a prime (55188533359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1758426 + ... + 1789535.

It is an arithmetic number, because the mean of its divisors is an integer number (2969644194).

Almost surely, 2^55188533355 is an apocalyptic number.

55188533355 is a deficient number, since it is larger than the sum of its proper divisors (39840080853).

55188533355 is a wasteful number, since it uses less digits than its factorization.

55188533355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548047.

The product of its digits is 5400000, while the sum is 51.

The spelling of 55188533355 in words is "fifty-five billion, one hundred eighty-eight million, five hundred thirty-three thousand, three hundred fifty-five".