249990056 has 24 divisors (see below), whose sum is σ = 481924170. Its totient is φ = 121484448.

The previous prime is 249989977. The next prime is 249990101. The reversal of 249990056 is 650099942.

It can be written as a sum of positive squares in only one way, i.e., 165533956 + 84456100 = 12866^2 + 9190^2 .

It is a junction number, because it is equal to n+sod(n) for n = 249989989 and 249990016.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 271565 + ... + 272483.

Almost surely, 2^249990056 is an apocalyptic number.

It is an amenable number.

249990056 is a deficient number, since it is larger than the sum of its proper divisors (231934114).

249990056 is an frugal number, since it uses more digits than its factorization.

249990056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 249990056 is about 15811.0738408243. The cubic root of 249990056 is about 629.9521724001.

The spelling of 249990056 in words is "two hundred forty-nine million, nine hundred ninety thousand, fifty-six".