556401505 has 8 divisors (see below), whose sum is σ = 728380224. Its totient is φ = 404655600.

The previous prime is 556401497. The next prime is 556401541. The reversal of 556401505 is 505104655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 556401505 - 2³ = 556401497 is a prime.

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, 5058141 + ... + 5058250.

It is an arithmetic number, because the mean of its divisors is an integer number (91047528).

Almost surely, 2^556401505 is an apocalyptic number.

556401505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

556401505 is a deficient number, since it is larger than the sum of its proper divisors (171978719).

556401505 is a wasteful number, since it uses less digits than its factorization.

556401505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10116407.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 556401505 is about 23588.1645110424. The cubic root of 556401505 is about 822.4877379817.

The spelling of 556401505 in words is "five hundred fifty-six million, four hundred one thousand, five hundred five".