1011157 has 4 divisors (see below), whose sum is σ = 1155616. Its totient is φ = 866700.

The previous prime is 1011139. The next prime is 1011163. The reversal of 1011157 is 7511101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011157 - 2⁷ = 1011029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72219 + ... + 72232.

It is an arithmetic number, because the mean of its divisors is an integer number (288904).

2^1011157 is an apocalyptic number.

It is an amenable number.

1011157 is a deficient number, since it is larger than the sum of its proper divisors (144459).

1011157 is an equidigital number, since it uses as much as digits as its factorization.

1011157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144458.

The product of its (nonzero) digits is 35, while the sum is 16.

The square root of 1011157 is about 1005.5630263688. The cubic root of 1011157 is about 100.3705254135.

Adding to 1011157 its reverse (7511101), we get a palindrome (8522258).

The spelling of 1011157 in words is "one million, eleven thousand, one hundred fifty-seven".