157532237 has 2 divisors, whose sum is σ = 157532238. Its totient is φ = 157532236.

The previous prime is 157532191. The next prime is 157532239. The reversal of 157532237 is 732235751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116942596 + 40589641 = 10814^2 + 6371^2 .

It is a cyclic number.

It is not a de Polignac number, because 157532237 - 2⁸ = 157531981 is a prime.

Together with 157532239, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 157532197 and 157532206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157532239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78766118 + 78766119.

It is an arithmetic number, because the mean of its divisors is an integer number (78766119).

Almost surely, 2^157532237 is an apocalyptic number.

It is an amenable number.

157532237 is a deficient number, since it is larger than the sum of its proper divisors (1).

157532237 is an equidigital number, since it uses as much as digits as its factorization.

157532237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44100, while the sum is 35.

The square root of 157532237 is about 12551.1846851204. The cubic root of 157532237 is about 540.0779917073.

Adding to 157532237 its reverse (732235751), we get a palindrome (889767988).

The spelling of 157532237 in words is "one hundred fifty-seven million, five hundred thirty-two thousand, two hundred thirty-seven".