157289397 has 8 divisors (see below), whose sum is σ = 210536256. Its totient is φ = 104451072.

The previous prime is 157289383. The next prime is 157289437. The reversal of 157289397 is 793982751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157289397 - 2¹⁶ = 157223861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157289597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101233 + ... + 102774.

It is an arithmetic number, because the mean of its divisors is an integer number (26317032).

Almost surely, 2^157289397 is an apocalyptic number.

It is an amenable number.

157289397 is a deficient number, since it is larger than the sum of its proper divisors (53246859).

157289397 is a wasteful number, since it uses less digits than its factorization.

157289397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204267.

The product of its digits is 952560, while the sum is 51.

The square root of 157289397 is about 12541.5069668681. The cubic root of 157289397 is about 539.8003342757.

The spelling of 157289397 in words is "one hundred fifty-seven million, two hundred eighty-nine thousand, three hundred ninety-seven".