1157553 has 12 divisors (see below), whose sum is σ = 1713348. Its totient is φ = 752640.

The previous prime is 1157539. The next prime is 1157557. The reversal of 1157553 is 3557511.

It can be written as a sum of positive squares in 2 ways, for example, as 685584 + 471969 = 828^2 + 687^2 .

It is not a de Polignac number, because 1157553 - 2⁶ = 1157489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1157557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1200 + ... + 1937.

It is an arithmetic number, because the mean of its divisors is an integer number (142779).

2^1157553 is an apocalyptic number.

It is an amenable number.

1157553 is a deficient number, since it is larger than the sum of its proper divisors (555795).

1157553 is a wasteful number, since it uses less digits than its factorization.

1157553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3184 (or 3181 counting only the distinct ones).

The product of its digits is 2625, while the sum is 27.

The square root of 1157553 is about 1075.8963704744. The cubic root of 1157553 is about 104.9978230841.

It can be divided in two parts, 11575 and 53, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 1157553 in words is "one million, one hundred fifty-seven thousand, five hundred fifty-three".