555481056 has 48 divisors (see below), whose sum is σ = 1570305744. Its totient is φ = 170916864.

The previous prime is 555481049. The next prime is 555481063. The reversal of 555481056 is 650184555.

It is an interprime number because it is at equal distance from previous prime (555481049) and next prime (555481063).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 221301 + ... + 223796.

It is an arithmetic number, because the mean of its divisors is an integer number (32714703).

Almost surely, 2^555481056 is an apocalyptic number.

It is an amenable number.

555481056 is an abundant number, since it is smaller than the sum of its proper divisors (1014824688).

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

555481056 is a wasteful number, since it uses less digits than its factorization.

555481056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445123 (or 445115 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 39.

The square root of 555481056 is about 23568.6456123384. The cubic root of 555481056 is about 822.0339434601.

The spelling of 555481056 in words is "five hundred fifty-five million, four hundred eighty-one thousand, fifty-six".