1131752497 has 4 divisors (see below), whose sum is σ = 1134787060. Its totient is φ = 1128717936.

The previous prime is 1131752491. The next prime is 1131752533. The reversal of 1131752497 is 7942571311.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 861774736 + 269977761 = 29356^2 + 16431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131752497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131752491) 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, 1516722 + ... + 1517467.

It is an arithmetic number, because the mean of its divisors is an integer number (283696765).

Almost surely, 2^1131752497 is an apocalyptic number.

It is an amenable number.

1131752497 is a deficient number, since it is larger than the sum of its proper divisors (3034563).

1131752497 is an equidigital number, since it uses as much as digits as its factorization.

1131752497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034562.

The product of its digits is 52920, while the sum is 40.

The square root of 1131752497 is about 33641.5293498973. The cubic root of 1131752497 is about 1042.1186154071.

The spelling of 1131752497 in words is "one billion, one hundred thirty-one million, seven hundred fifty-two thousand, four hundred ninety-seven".