1055252257 has 2 divisors, whose sum is σ = 1055252258. Its totient is φ = 1055252256.

The previous prime is 1055252249. The next prime is 1055252281. The reversal of 1055252257 is 7522525501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972878481 + 82373776 = 31191^2 + 9076^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055252257 - 2³ = 1055252249 is a prime.

It is a super-2 number, since 2×1055252257² = 2227114651807188098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1055252287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527626128 + 527626129.

It is an arithmetic number, because the mean of its divisors is an integer number (527626129).

Almost surely, 2^1055252257 is an apocalyptic number.

It is an amenable number.

1055252257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055252257 is an equidigital number, since it uses as much as digits as its factorization.

1055252257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35000, while the sum is 34.

The square root of 1055252257 is about 32484.6464810686. The cubic root of 1055252257 is about 1018.0882610743.

Adding to 1055252257 its reverse (7522525501), we get a palindrome (8577777758).

The spelling of 1055252257 in words is "one billion, fifty-five million, two hundred fifty-two thousand, two hundred fifty-seven".