1157564 has 24 divisors (see below), whose sum is σ = 2222640. Its totient is φ = 525056.

The previous prime is 1157557. The next prime is 1157579. The reversal of 1157564 is 4657511.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1679 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (92610).

2^1157564 is an apocalyptic number.

It is an amenable number.

1157564 is a deficient number, since it is larger than the sum of its proper divisors (1065076).

1157564 is a wasteful number, since it uses less digits than its factorization.

1157564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 635 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 1157564 is about 1075.9014824788. The cubic root of 1157564 is about 104.9981556743.

It can be divided in two parts, 11 and 57564, that added together give a palindrome (57575).

The spelling of 1157564 in words is "one million, one hundred fifty-seven thousand, five hundred sixty-four".