157896397 has 2 divisors, whose sum is σ = 157896398. Its totient is φ = 157896396.

The previous prime is 157896383. The next prime is 157896407. The reversal of 157896397 is 793698751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93431556 + 64464841 = 9666^2 + 8029^2 .

It is an emirp because it is prime and its reverse (793698751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157896397 - 2¹¹ = 157894349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157896317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78948198 + 78948199.

It is an arithmetic number, because the mean of its divisors is an integer number (78948199).

Almost surely, 2^157896397 is an apocalyptic number.

It is an amenable number.

157896397 is a deficient number, since it is larger than the sum of its proper divisors (1).

157896397 is an equidigital number, since it uses as much as digits as its factorization.

157896397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 55.

The square root of 157896397 is about 12565.6833081214. The cubic root of 157896397 is about 540.4938292347.

The spelling of 157896397 in words is "one hundred fifty-seven million, eight hundred ninety-six thousand, three hundred ninety-seven".