157140233 has 4 divisors (see below), whose sum is σ = 158287380. Its totient is φ = 155993088.

The previous prime is 157140229. The next prime is 157140251. The reversal of 157140233 is 332041751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122058304 + 35081929 = 11048^2 + 5923^2 .

It is a cyclic number.

It is not a de Polignac number, because 157140233 - 2² = 157140229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157140293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573368 + ... + 573641.

It is an arithmetic number, because the mean of its divisors is an integer number (39571845).

Almost surely, 2^157140233 is an apocalyptic number.

It is an amenable number.

157140233 is a deficient number, since it is larger than the sum of its proper divisors (1147147).

157140233 is a wasteful number, since it uses less digits than its factorization.

157140233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147146.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 157140233 is about 12535.5587430318. The cubic root of 157140233 is about 539.6296420250.

Adding to 157140233 its reverse (332041751), we get a palindrome (489181984).

The spelling of 157140233 in words is "one hundred fifty-seven million, one hundred forty thousand, two hundred thirty-three".