1056621550 has 24 divisors (see below), whose sum is σ = 1975623552. Its totient is φ = 420432000.

The previous prime is 1056621497. The next prime is 1056621563. The reversal of 1056621550 is 551266501.

It is a super-2 number, since 2×1056621550² = 2232898199848805000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45771 + ... + 64870.

It is an arithmetic number, because the mean of its divisors is an integer number (82317648).

Almost surely, 2^1056621550 is an apocalyptic number.

1056621550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1056621550 is a deficient number, since it is larger than the sum of its proper divisors (919002002).

1056621550 is a wasteful number, since it uses less digits than its factorization.

1056621550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110844 (or 110839 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 1056621550 is about 32505.7156512512. The cubic root of 1056621550 is about 1018.5284271033.

The spelling of 1056621550 in words is "one billion, fifty-six million, six hundred twenty-one thousand, five hundred fifty".