561372250 has 16 divisors (see below), whose sum is σ = 1050889320. Its totient is φ = 224548800.

The previous prime is 561372223. The next prime is 561372269. The reversal of 561372250 is 52273165.

It can be written as a sum of positive squares in 4 ways, for example, as 45037521 + 516334729 = 6711^2 + 22723^2 .

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, 1122495 + ... + 1122994.

Almost surely, 2^561372250 is an apocalyptic number.

561372250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

561372250 is a deficient number, since it is larger than the sum of its proper divisors (489517070).

561372250 is a wasteful number, since it uses less digits than its factorization.

561372250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245506 (or 2245496 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 561372250 is about 23693.2954651733. The cubic root of 561372250 is about 824.9297766981.

The spelling of 561372250 in words is "five hundred sixty-one million, three hundred seventy-two thousand, two hundred fifty".