1145355155 has 12 divisors (see below), whose sum is σ = 1598822640. Its totient is φ = 785386224.

The previous prime is 1145355143. The next prime is 1145355163. The reversal of 1145355155 is 5515535411.

It is not a de Polignac number, because 1145355155 - 2¹⁴ = 1145338771 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 11 ways as a sum of consecutive naturals, for example, 2337215 + ... + 2337704.

It is an arithmetic number, because the mean of its divisors is an integer number (133235220).

Almost surely, 2^1145355155 is an apocalyptic number.

1145355155 is a deficient number, since it is larger than the sum of its proper divisors (453467485).

1145355155 is an equidigital number, since it uses as much as digits as its factorization.

1145355155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674938 (or 4674931 counting only the distinct ones).

The product of its digits is 37500, while the sum is 35.

The square root of 1145355155 is about 33843.0961201838. The cubic root of 1145355155 is about 1046.2771119968.

The spelling of 1145355155 in words is "one billion, one hundred forty-five million, three hundred fifty-five thousand, one hundred fifty-five".