1264271057 has 16 divisors (see below), whose sum is σ = 1471411200. Its totient is φ = 1063815120.

The previous prime is 1264271027. The next prime is 1264271083. The reversal of 1264271057 is 7501724621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264271057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1264271017) 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, 377882 + ... + 381212.

It is an arithmetic number, because the mean of its divisors is an integer number (91963200).

Almost surely, 2^1264271057 is an apocalyptic number.

It is an amenable number.

1264271057 is a deficient number, since it is larger than the sum of its proper divisors (207140143).

1264271057 is an equidigital number, since it uses as much as digits as its factorization.

1264271057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4316.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 1264271057 is about 35556.5895018068. The cubic root of 1264271057 is about 1081.3013169002.

Adding to 1264271057 its reverse (7501724621), we get a palindrome (8765995678).

The spelling of 1264271057 in words is "one billion, two hundred sixty-four million, two hundred seventy-one thousand, fifty-seven".