1131522501 has 4 divisors (see below), whose sum is σ = 1508696672. Its totient is φ = 754348332.

The previous prime is 1131522481. The next prime is 1131522503. The reversal of 1131522501 is 1052251311.

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 not a de Polignac number, because 1131522501 - 2⁶ = 1131522437 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 (1131522503) 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, 188587081 + ... + 188587086.

It is an arithmetic number, because the mean of its divisors is an integer number (377174168).

Almost surely, 2^1131522501 is an apocalyptic number.

It is an amenable number.

1131522501 is a deficient number, since it is larger than the sum of its proper divisors (377174171).

1131522501 is an equidigital number, since it uses as much as digits as its factorization.

1131522501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377174170.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1131522501 is about 33638.1108417224. The cubic root of 1131522501 is about 1042.0480171236.

Adding to 1131522501 its reverse (1052251311), we get a palindrome (2183773812).

The spelling of 1131522501 in words is "one billion, one hundred thirty-one million, five hundred twenty-two thousand, five hundred one".