1145257153 has 4 divisors (see below), whose sum is σ = 1145325508. Its totient is φ = 1145188800.

The previous prime is 1145257133. The next prime is 1145257159. The reversal of 1145257153 is 3517525411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3517525411 = 61 ⋅57664351.

It can be written as a sum of positive squares in 2 ways, for example, as 696537664 + 448719489 = 26392^2 + 21183^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145257153 - 2²¹ = 1143160001 is a prime.

It is a super-2 number, since 2×1145257153² = 2623227892995330818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145257159) 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, 9925 + ... + 48877.

It is an arithmetic number, because the mean of its divisors is an integer number (286331377).

Almost surely, 2^1145257153 is an apocalyptic number.

It is an amenable number.

1145257153 is a deficient number, since it is larger than the sum of its proper divisors (68355).

1145257153 is an equidigital number, since it uses as much as digits as its factorization.

1145257153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68354.

The product of its digits is 21000, while the sum is 34.

The square root of 1145257153 is about 33841.6482015873. The cubic root of 1145257153 is about 1046.2472696741.

The spelling of 1145257153 in words is "one billion, one hundred forty-five million, two hundred fifty-seven thousand, one hundred fifty-three".