1044557557 has 2 divisors, whose sum is σ = 1044557558. Its totient is φ = 1044557556.

The previous prime is 1044557551. The next prime is 1044557587. The reversal of 1044557557 is 7557554401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 710435716 + 334121841 = 26654^2 + 18279^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044557557 - 2⁷ = 1044557429 is a prime.

It is a super-2 number, since 2×1044557557² = 2182200979771616498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1044557551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522278778 + 522278779.

It is an arithmetic number, because the mean of its divisors is an integer number (522278779).

Almost surely, 2^1044557557 is an apocalyptic number.

It is an amenable number.

1044557557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1044557557 is an equidigital number, since it uses as much as digits as its factorization.

1044557557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490000, while the sum is 43.

The square root of 1044557557 is about 32319.6156691258. The cubic root of 1044557557 is about 1014.6372253016.

The spelling of 1044557557 in words is "one billion, forty-four million, five hundred fifty-seven thousand, five hundred fifty-seven".