553455855 has 32 divisors (see below), whose sum is σ = 986166720. Its totient is φ = 294503040.

The previous prime is 553455853. The next prime is 553455899. The reversal of 553455855 is 558554355.

It is a happy number.

553455855 is a `hidden beast` number, since 553 + 45 + 5 + 8 + 55 = 666.

It is not a de Polignac number, because 553455855 - 2¹ = 553455853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 553455855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553455853) 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, 57789 + ... + 66681.

It is an arithmetic number, because the mean of its divisors is an integer number (30817710).

Almost surely, 2^553455855 is an apocalyptic number.

553455855 is a deficient number, since it is larger than the sum of its proper divisors (432710865).

553455855 is a wasteful number, since it uses less digits than its factorization.

553455855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9368 (or 9362 counting only the distinct ones).

The product of its digits is 1500000, while the sum is 45.

The square root of 553455855 is about 23525.6424991965. The cubic root of 553455855 is about 821.0337225772.

The spelling of 553455855 in words is "five hundred fifty-three million, four hundred fifty-five thousand, eight hundred fifty-five".