157522394 has 12 divisors (see below), whose sum is σ = 242836074. Its totient is φ = 76579992.

The previous prime is 157522381. The next prime is 157522397. The reversal of 157522394 is 493225751.

It can be written as a sum of positive squares in only one way, i.e., 104305369 + 53217025 = 10213^2 + 7295^2 .

It is a super-2 number, since 2×157522394² = 49626609222982472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157522397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107237 + ... + 108695.

Almost surely, 2^157522394 is an apocalyptic number.

157522394 is a deficient number, since it is larger than the sum of its proper divisors (85313680).

157522394 is an frugal number, since it uses more digits than its factorization.

157522394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957 (or 1498 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 157522394 is about 12550.7925646152. The cubic root of 157522394 is about 540.0667430078.

The spelling of 157522394 in words is "one hundred fifty-seven million, five hundred twenty-two thousand, three hundred ninety-four".