1152631551 has 4 divisors (see below), whose sum is σ = 1536842072. Its totient is φ = 768421032.

The previous prime is 1152631531. The next prime is 1152631559. The reversal of 1152631551 is 1551362511.

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

It is not a de Polignac number, because 1152631551 - 2¹¹ = 1152629503 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 (1152631559) 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, 192105256 + ... + 192105261.

It is an arithmetic number, because the mean of its divisors is an integer number (384210518).

Almost surely, 2^1152631551 is an apocalyptic number.

1152631551 is a deficient number, since it is larger than the sum of its proper divisors (384210521).

1152631551 is an equidigital number, since it uses as much as digits as its factorization.

1152631551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384210520.

The product of its digits is 4500, while the sum is 30.

The square root of 1152631551 is about 33950.4278470832. The cubic root of 1152631551 is about 1048.4880888735.

The spelling of 1152631551 in words is "one billion, one hundred fifty-two million, six hundred thirty-one thousand, five hundred fifty-one".