1157530 has 32 divisors (see below), whose sum is σ = 2410560. Its totient is φ = 395520.

The previous prime is 1157503. The next prime is 1157531. The reversal of 1157530 is 357511.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1157531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1561 + ... + 2179.

It is an arithmetic number, because the mean of its divisors is an integer number (75330).

2^1157530 is an apocalyptic number.

1157530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1157530 is an abundant number, since it is smaller than the sum of its proper divisors (1253030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1157530 is a wasteful number, since it uses less digits than its factorization.

1157530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 1157530 is about 1075.8856816595. The cubic root of 1157530 is about 104.9971276614.

The spelling of 1157530 in words is "one million, one hundred fifty-seven thousand, five hundred thirty".