4520406555 has 48 divisors (see below), whose sum is σ = 9348337440. Its totient is φ = 2066468544.

The previous prime is 4520406547. The next prime is 4520406613. The reversal of 4520406555 is 5556040254.

4520406555 is a `hidden beast` number, since 45 + 20 + 40 + 6 + 555 = 666.

It is not a de Polignac number, because 4520406555 - 2³ = 4520406547 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 335064 + ... + 348293.

It is an arithmetic number, because the mean of its divisors is an integer number (194757030).

Almost surely, 2^4520406555 is an apocalyptic number.

4520406555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4520406555 is an abundant number, since it is smaller than the sum of its proper divisors (4827930885).

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

4520406555 is a wasteful number, since it uses less digits than its factorization.

4520406555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683385 (or 683372 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The square root of 4520406555 is about 67233.9687583590. The cubic root of 4520406555 is about 1653.4554527067.

The spelling of 4520406555 in words is "four billion, five hundred twenty million, four hundred six thousand, five hundred fifty-five".