1055424257 has 4 divisors (see below), whose sum is σ = 1072726356. Its totient is φ = 1038122160.

The previous prime is 1055424247. The next prime is 1055424259. The reversal of 1055424257 is 7524245501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 205176976 + 850247281 = 14324^2 + 29159^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055424257 - 2⁴ = 1055424241 is a prime.

It is a super-2 number, since 2×1055424257² = 2227840724528004098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055424259) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8650958 + ... + 8651079.

It is an arithmetic number, because the mean of its divisors is an integer number (268181589).

Almost surely, 2^1055424257 is an apocalyptic number.

It is an amenable number.

1055424257 is a deficient number, since it is larger than the sum of its proper divisors (17302099).

1055424257 is an equidigital number, since it uses as much as digits as its factorization.

1055424257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17302098.

The product of its (nonzero) digits is 56000, while the sum is 35.

The square root of 1055424257 is about 32487.2937777218. The cubic root of 1055424257 is about 1018.1435722306.

Adding to 1055424257 its reverse (7524245501), we get a palindrome (8579669758).

The spelling of 1055424257 in words is "one billion, fifty-five million, four hundred twenty-four thousand, two hundred fifty-seven".