1155140507 has 8 divisors (see below), whose sum is σ = 1194040320. Its totient is φ = 1116343080.

The previous prime is 1155140489. The next prime is 1155140509. The reversal of 1155140507 is 7050415511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155140507 - 2²⁶ = 1088031643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155140507.

It is not an unprimeable number, because it can be changed into a prime (1155140509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2303 + ... + 48120.

It is an arithmetic number, because the mean of its divisors is an integer number (149255040).

Almost surely, 2^1155140507 is an apocalyptic number.

1155140507 is a deficient number, since it is larger than the sum of its proper divisors (38899813).

1155140507 is an equidigital number, since it uses as much as digits as its factorization.

1155140507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51193.

The product of its (nonzero) digits is 3500, while the sum is 29.

The square root of 1155140507 is about 33987.3580467797. The cubic root of 1155140507 is about 1049.2482925087.

The spelling of 1155140507 in words is "one billion, one hundred fifty-five million, one hundred forty thousand, five hundred seven".