556464551 has 4 divisors (see below), whose sum is σ = 560712504. Its totient is φ = 552216600.

The previous prime is 556464529. The next prime is 556464569. The reversal of 556464551 is 155464655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 556464551 - 2²² = 552270247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 556464499 and 556464508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556466551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2123780 + ... + 2124041.

It is an arithmetic number, because the mean of its divisors is an integer number (140178126).

Almost surely, 2^556464551 is an apocalyptic number.

556464551 is a deficient number, since it is larger than the sum of its proper divisors (4247953).

556464551 is a wasteful number, since it uses less digits than its factorization.

556464551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247952.

The product of its digits is 360000, while the sum is 41.

The square root of 556464551 is about 23589.5008637317. The cubic root of 556464551 is about 822.5188022420.

The spelling of 556464551 in words is "five hundred fifty-six million, four hundred sixty-four thousand, five hundred fifty-one".