1557224250 has 32 divisors (see below), whose sum is σ = 3886833600. Its totient is φ = 415259600.

The previous prime is 1557224233. The next prime is 1557224261. The reversal of 1557224250 is 524227551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1037400 + ... + 1038899.

It is an arithmetic number, because the mean of its divisors is an integer number (121463550).

Almost surely, 2^1557224250 is an apocalyptic number.

1557224250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1557224250 is an abundant number, since it is smaller than the sum of its proper divisors (2329609350).

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

1557224250 is a wasteful number, since it uses less digits than its factorization.

1557224250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076319 (or 2076309 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 1557224250 is about 39461.6807802202. The cubic root of 1557224250 is about 1159.0897164016.

The spelling of 1557224250 in words is "one billion, five hundred fifty-seven million, two hundred twenty-four thousand, two hundred fifty".