1157505411 has 4 divisors (see below), whose sum is σ = 1543340552. Its totient is φ = 771670272.

The previous prime is 1157505379. The next prime is 1157505421. The reversal of 1157505411 is 1145057511.

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

It is not a de Polignac number, because 1157505411 - 2⁵ = 1157505379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157505421) 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, 192917566 + ... + 192917571.

It is an arithmetic number, because the mean of its divisors is an integer number (385835138).

Almost surely, 2^1157505411 is an apocalyptic number.

1157505411 is a deficient number, since it is larger than the sum of its proper divisors (385835141).

1157505411 is an equidigital number, since it uses as much as digits as its factorization.

1157505411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385835140.

The product of its (nonzero) digits is 3500, while the sum is 30.

The square root of 1157505411 is about 34022.1311942682. The cubic root of 1157505411 is about 1049.9638418388.

The spelling of 1157505411 in words is "one billion, one hundred fifty-seven million, five hundred five thousand, four hundred eleven".