1157717461 has 4 divisors (see below), whose sum is σ = 1158004000. Its totient is φ = 1157430924.

The previous prime is 1157717417. The next prime is 1157717501. The reversal of 1157717461 is 1647177511.

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 1157717461 - 2⁷ = 1157717333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157717401) 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, 137121 + ... + 145318.

It is an arithmetic number, because the mean of its divisors is an integer number (289501000).

Almost surely, 2^1157717461 is an apocalyptic number.

It is an amenable number.

1157717461 is a deficient number, since it is larger than the sum of its proper divisors (286539).

1157717461 is an equidigital number, since it uses as much as digits as its factorization.

1157717461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286538.

The product of its digits is 41160, while the sum is 40.

The square root of 1157717461 is about 34025.2474054194. The cubic root of 1157717461 is about 1050.0279542066.

The spelling of 1157717461 in words is "one billion, one hundred fifty-seven million, seven hundred seventeen thousand, four hundred sixty-one".