1151642555 has 16 divisors (see below), whose sum is σ = 1616127744. Its totient is φ = 771331680.

The previous prime is 1151642539. The next prime is 1151642561. The reversal of 1151642555 is 5552461511.

It is not a de Polignac number, because 1151642555 - 2⁴ = 1151642539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381101 + ... + 384110.

It is an arithmetic number, because the mean of its divisors is an integer number (101007984).

Almost surely, 2^1151642555 is an apocalyptic number.

1151642555 is a deficient number, since it is larger than the sum of its proper divisors (464485189).

1151642555 is an equidigital number, since it uses as much as digits as its factorization.

1151642555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765266.

The product of its digits is 30000, while the sum is 35.

The square root of 1151642555 is about 33935.8594262765. The cubic root of 1151642555 is about 1048.1881239090.

The spelling of 1151642555 in words is "one billion, one hundred fifty-one million, six hundred forty-two thousand, five hundred fifty-five".