1131550051 has 4 divisors (see below), whose sum is σ = 1155625632. Its totient is φ = 1107474472.

The previous prime is 1131550009. The next prime is 1131550081. The reversal of 1131550051 is 1500551311.

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

It is a cyclic number.

It is not a de Polignac number, because 1131550051 - 2⁹ = 1131549539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131550081) 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, 12037720 + ... + 12037813.

It is an arithmetic number, because the mean of its divisors is an integer number (288906408).

Almost surely, 2^1131550051 is an apocalyptic number.

1131550051 is a deficient number, since it is larger than the sum of its proper divisors (24075581).

1131550051 is an equidigital number, since it uses as much as digits as its factorization.

1131550051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24075580.

The product of its (nonzero) digits is 375, while the sum is 22.

The square root of 1131550051 is about 33638.5203449854. The cubic root of 1131550051 is about 1042.0564742215.

The spelling of 1131550051 in words is "one billion, one hundred thirty-one million, five hundred fifty thousand, fifty-one".