158355697 has 8 divisors (see below), whose sum is σ = 168897096. Its totient is φ = 147950592.

The previous prime is 158355661. The next prime is 158355707. The reversal of 158355697 is 796553851.

It can be written as a sum of positive squares in 4 ways, for example, as 68409441 + 89946256 = 8271^2 + 9484^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-158355697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158355697.

It is not an unprimeable number, because it can be changed into a prime (158355397) 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, 31668 + ... + 36325.

It is an arithmetic number, because the mean of its divisors is an integer number (21112137).

Almost surely, 2^158355697 is an apocalyptic number.

158355697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

158355697 is a deficient number, since it is larger than the sum of its proper divisors (10541399).

158355697 is a wasteful number, since it uses less digits than its factorization.

158355697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68147.

The product of its digits is 1134000, while the sum is 49.

The square root of 158355697 is about 12583.9460027449. The cubic root of 158355697 is about 541.0173972217.

The spelling of 158355697 in words is "one hundred fifty-eight million, three hundred fifty-five thousand, six hundred ninety-seven".