1157975 has 24 divisors (see below), whose sum is σ = 1770720. Its totient is φ = 731520.

The previous prime is 1157969. The next prime is 1157977. The reversal of 1157975 is 5797511.

It is a de Polignac number, because none of the positive numbers 2^k-1157975 is a prime.

It is a super-2 number, since 2×1157975² = 2681812201250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2021 + ... + 2529.

It is an arithmetic number, because the mean of its divisors is an integer number (73780).

2^1157975 is an apocalyptic number.

1157975 is a deficient number, since it is larger than the sum of its proper divisors (612745).

1157975 is a wasteful number, since it uses less digits than its factorization.

1157975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 534 counting only the distinct ones).

The product of its digits is 11025, while the sum is 35.

The square root of 1157975 is about 1076.0924681457. The cubic root of 1157975 is about 105.0105809443.

The spelling of 1157975 in words is "one million, one hundred fifty-seven thousand, nine hundred seventy-five".