158547997 has 12 divisors (see below), whose sum is σ = 164112480. Its totient is φ = 153164016.

The previous prime is 158547979. The next prime is 158548051. The reversal of 158547997 is 799745851.

It is a happy number.

It is not a de Polignac number, because 158547997 - 2⁷ = 158547869 is a prime.

It is a Duffinian number.

Its product of digits (3175200) is a multiple of the sum of its prime factors (900).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158547937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244728 + ... + 245374.

It is an arithmetic number, because the mean of its divisors is an integer number (13676040).

Almost surely, 2^158547997 is an apocalyptic number.

It is an amenable number.

158547997 is a deficient number, since it is larger than the sum of its proper divisors (5564483).

158547997 is an equidigital number, since it uses as much as digits as its factorization.

158547997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 863 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 55.

The square root of 158547997 is about 12591.5843721114. The cubic root of 158547997 is about 541.2363043255.

The spelling of 158547997 in words is "one hundred fifty-eight million, five hundred forty-seven thousand, nine hundred ninety-seven".