157623237 has 12 divisors (see below), whose sum is σ = 227794944. Its totient is φ = 105028200.

The previous prime is 157623233. The next prime is 157623239. The reversal of 157623237 is 732326751.

157623237 is a `hidden beast` number, since 1 + 5 + 7 + 623 + 23 + 7 = 666.

It is not a de Polignac number, because 157623237 - 2² = 157623233 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157623233) 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 11 ways as a sum of consecutive naturals, for example, 22588 + ... + 28730.

It is an arithmetic number, because the mean of its divisors is an integer number (18982912).

Almost surely, 2^157623237 is an apocalyptic number.

It is an amenable number.

157623237 is a deficient number, since it is larger than the sum of its proper divisors (70171707).

157623237 is a wasteful number, since it uses less digits than its factorization.

157623237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000 (or 8997 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 157623237 is about 12554.8093175484. The cubic root of 157623237 is about 540.1819654246.

Adding to 157623237 its reverse (732326751), we get a palindrome (889949988).

The spelling of 157623237 in words is "one hundred fifty-seven million, six hundred twenty-three thousand, two hundred thirty-seven".