158265797 has 2 divisors, whose sum is σ = 158265798. Its totient is φ = 158265796.

The previous prime is 158265743. The next prime is 158265799. The reversal of 158265797 is 797562851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113763556 + 44502241 = 10666^2 + 6671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158265797 is a prime.

Together with 158265799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158265799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79132898 + 79132899.

It is an arithmetic number, because the mean of its divisors is an integer number (79132899).

Almost surely, 2^158265797 is an apocalyptic number.

It is an amenable number.

158265797 is a deficient number, since it is larger than the sum of its proper divisors (1).

158265797 is an equidigital number, since it uses as much as digits as its factorization.

158265797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 50.

The square root of 158265797 is about 12580.3734841220. The cubic root of 158265797 is about 540.9149976411.

The spelling of 158265797 in words is "one hundred fifty-eight million, two hundred sixty-five thousand, seven hundred ninety-seven".