1157355 has 16 divisors (see below), whose sum is σ = 2057760. Its totient is φ = 617184.

The previous prime is 1157341. The next prime is 1157357. The reversal of 1157355 is 5537511.

It is not a de Polignac number, because 1157355 - 2⁴ = 1157339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

1157355 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1157357) 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 15 ways as a sum of consecutive naturals, for example, 4152 + ... + 4421.

It is an arithmetic number, because the mean of its divisors is an integer number (128610).

2^1157355 is an apocalyptic number.

1157355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1157355 is a deficient number, since it is larger than the sum of its proper divisors (900405).

1157355 is an equidigital number, since it uses as much as digits as its factorization.

1157355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8587 (or 8581 counting only the distinct ones).

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

The square root of 1157355 is about 1075.8043502422. The cubic root of 1157355 is about 104.9918361000.

It can be divided in two parts, 11573 and 55, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 1157355 in words is "one million, one hundred fifty-seven thousand, three hundred fifty-five".