157397 has 4 divisors (see below), whose sum is σ = 158976. Its totient is φ = 155820.

The previous prime is 157393. The next prime is 157411. The reversal of 157397 is 793751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 157397 - 2² = 157393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629 + ... + 842.

It is an arithmetic number, because the mean of its divisors is an integer number (39744).

2¹⁵⁷³⁹⁷ is an apocalyptic number.

It is an amenable number.

157397 is a deficient number, since it is larger than the sum of its proper divisors (1579).

157397 is a wasteful number, since it uses less digits than its factorization.

157397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578.

The product of its digits is 6615, while the sum is 32.

The square root of 157397 is about 396.7329076343. The cubic root of 157397 is about 53.9923400200.

The spelling of 157397 in words is "one hundred fifty-seven thousand, three hundred ninety-seven".