556164450 has 72 divisors (see below), whose sum is σ = 1518798996. Its totient is φ = 145872000.

The previous prime is 556164439. The next prime is 556164461. The reversal of 556164450 is 54461655.

556164450 is a `hidden beast` number, since 5 + 5 + 6 + 1 + 644 + 5 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (556164439) and next prime (556164461).

It can be written as a sum of positive squares in 6 ways, for example, as 6561 + 556157889 = 81^2 + 23583^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17320 + ... + 37580.

Almost surely, 2^556164450 is an apocalyptic number.

556164450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 556164450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (759399498).

556164450 is an abundant number, since it is smaller than the sum of its proper divisors (962634546).

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

556164450 is a wasteful number, since it uses less digits than its factorization.

556164450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20340 (or 20332 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 556164450 is about 23583.1391040294. The cubic root of 556164450 is about 822.3709143539.

The spelling of 556164450 in words is "five hundred fifty-six million, one hundred sixty-four thousand, four hundred fifty".