157241237 has 2 divisors, whose sum is σ = 157241238. Its totient is φ = 157241236.

The previous prime is 157241233. The next prime is 157241251. The reversal of 157241237 is 732142751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148084561 + 9156676 = 12169^2 + 3026^2 .

It is a cyclic number.

It is not a de Polignac number, because 157241237 - 2² = 157241233 is a prime.

It is a super-2 number, since 2×157241237² = 49449613226580338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157241233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78620618 + 78620619.

It is an arithmetic number, because the mean of its divisors is an integer number (78620619).

Almost surely, 2^157241237 is an apocalyptic number.

It is an amenable number.

157241237 is a deficient number, since it is larger than the sum of its proper divisors (1).

157241237 is an equidigital number, since it uses as much as digits as its factorization.

157241237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 32.

The square root of 157241237 is about 12539.5867954251. The cubic root of 157241237 is about 539.7452353342.

Adding to 157241237 its reverse (732142751), we get a palindrome (889383988).

It can be divided in two parts, 15724 and 1237, that added together give a palindrome (16961).

The spelling of 157241237 in words is "one hundred fifty-seven million, two hundred forty-one thousand, two hundred thirty-seven".