1131792521 has 2 divisors, whose sum is σ = 1131792522. Its totient is φ = 1131792520.

The previous prime is 1131792517. The next prime is 1131792523. The reversal of 1131792521 is 1252971311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 786241600 + 345550921 = 28040^2 + 18589^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131792521 - 2² = 1131792517 is a prime.

Together with 1131792523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1131792523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565896260 + 565896261.

It is an arithmetic number, because the mean of its divisors is an integer number (565896261).

Almost surely, 2^1131792521 is an apocalyptic number.

It is an amenable number.

1131792521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131792521 is an equidigital number, since it uses as much as digits as its factorization.

1131792521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 32.

The square root of 1131792521 is about 33642.1242046337. The cubic root of 1131792521 is about 1042.1308999728.

The spelling of 1131792521 in words is "one billion, one hundred thirty-one million, seven hundred ninety-two thousand, five hundred twenty-one".