1257164 has 12 divisors (see below), whose sum is σ = 2208024. Its totient is φ = 626304.

The previous prime is 1257163. The next prime is 1257199. The reversal of 1257164 is 4617521.

It is a super-2 number, since 2×1257164² = 3160922645792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1257163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532 + ... + 2204.

It is an arithmetic number, because the mean of its divisors is an integer number (184002).

2^1257164 is an apocalyptic number.

It is an amenable number.

1257164 is a deficient number, since it is larger than the sum of its proper divisors (950860).

1257164 is a wasteful number, since it uses less digits than its factorization.

1257164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144 (or 1142 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 1257164 is about 1121.2332495962. The cubic root of 1257164 is about 107.9271342059.

The spelling of 1257164 in words is "one million, two hundred fifty-seven thousand, one hundred sixty-four".