555620856 has 32 divisors (see below), whose sum is σ = 1587488640. Its totient is φ = 158748768.

The previous prime is 555620803. The next prime is 555620869. The reversal of 555620856 is 658026555.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1653466 + ... + 1653801.

It is an arithmetic number, because the mean of its divisors is an integer number (49609020).

Almost surely, 2^555620856 is an apocalyptic number.

555620856 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

555620856 is an abundant number, since it is smaller than the sum of its proper divisors (1031867784).

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

555620856 is a wasteful number, since it uses less digits than its factorization.

555620856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307283 (or 3307279 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The square root of 555620856 is about 23571.6112304611. The cubic root of 555620856 is about 822.1028991305.

The spelling of 555620856 in words is "five hundred fifty-five million, six hundred twenty thousand, eight hundred fifty-six".