1150156057 has 4 divisors (see below), whose sum is σ = 1150698420. Its totient is φ = 1149613696.

The previous prime is 1150156043. The next prime is 1150156081. The reversal of 1150156057 is 7506510511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7506510511 = 2309 ⋅3250979.

It can be written as a sum of positive squares in 2 ways, for example, as 219662041 + 930494016 = 14821^2 + 30504^2 .

It is a cyclic number.

It is not a de Polignac number, because 1150156057 - 2¹¹ = 1150154009 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1150156157) 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, 267988 + ... + 272245.

It is an arithmetic number, because the mean of its divisors is an integer number (287674605).

Almost surely, 2^1150156057 is an apocalyptic number.

It is an amenable number.

1150156057 is a deficient number, since it is larger than the sum of its proper divisors (542363).

1150156057 is an equidigital number, since it uses as much as digits as its factorization.

1150156057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542362.

The product of its (nonzero) digits is 5250, while the sum is 31.

The square root of 1150156057 is about 33913.9507725066. The cubic root of 1150156057 is about 1047.7369421263.

Adding to 1150156057 its reverse (7506510511), we get a palindrome (8656666568).

The spelling of 1150156057 in words is "one billion, one hundred fifty million, one hundred fifty-six thousand, fifty-seven".