1044656553 has 16 divisors (see below), whose sum is σ = 1420467840. Its totient is φ = 682665984.

The previous prime is 1044656549. The next prime is 1044656567. The reversal of 1044656553 is 3556564401.

It is not a de Polignac number, because 1044656553 - 2² = 1044656549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1044656513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221700 + ... + 226362.

It is an arithmetic number, because the mean of its divisors is an integer number (88779240).

Almost surely, 2^1044656553 is an apocalyptic number.

It is an amenable number.

1044656553 is a deficient number, since it is larger than the sum of its proper divisors (375811287).

1044656553 is a wasteful number, since it uses less digits than its factorization.

1044656553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128.

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 1044656553 is about 32321.1471485775. The cubic root of 1044656553 is about 1014.6692777411.

The spelling of 1044656553 in words is "one billion, forty-four million, six hundred fifty-six thousand, five hundred fifty-three".