1157252507 has 4 divisors (see below), whose sum is σ = 1184165400. Its totient is φ = 1130339616.

The previous prime is 1157252489. The next prime is 1157252519. The reversal of 1157252507 is 7052527511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1157252507 - 2⁶ = 1157252443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157252557) 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, 13456382 + ... + 13456467.

It is an arithmetic number, because the mean of its divisors is an integer number (296041350).

Almost surely, 2^1157252507 is an apocalyptic number.

1157252507 is a deficient number, since it is larger than the sum of its proper divisors (26912893).

1157252507 is an equidigital number, since it uses as much as digits as its factorization.

1157252507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26912892.

The product of its (nonzero) digits is 24500, while the sum is 35.

The square root of 1157252507 is about 34018.4142340586. The cubic root of 1157252507 is about 1049.8873672079.

The spelling of 1157252507 in words is "one billion, one hundred fifty-seven million, two hundred fifty-two thousand, five hundred seven".