157828591 has 2 divisors, whose sum is σ = 157828592. Its totient is φ = 157828590.

The previous prime is 157828589. The next prime is 157828607. The reversal of 157828591 is 195828751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157828591 - 2¹ = 157828589 is a prime.

Together with 157828589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157808591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78914295 + 78914296.

It is an arithmetic number, because the mean of its divisors is an integer number (78914296).

Almost surely, 2^157828591 is an apocalyptic number.

157828591 is a deficient number, since it is larger than the sum of its proper divisors (1).

157828591 is an equidigital number, since it uses as much as digits as its factorization.

157828591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 46.

The square root of 157828591 is about 12562.9849558136. The cubic root of 157828591 is about 540.4164494410.

The spelling of 157828591 in words is "one hundred fifty-seven million, eight hundred twenty-eight thousand, five hundred ninety-one".