158761587 has 16 divisors (see below), whose sum is σ = 223184000. Its totient is φ = 100108224.

The previous prime is 158761583. The next prime is 158761601. The reversal of 158761587 is 785167851.

158761587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 158761587 - 2² = 158761583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158761583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40239 + ... + 44007.

It is an arithmetic number, because the mean of its divisors is an integer number (13949000).

Almost surely, 2^158761587 is an apocalyptic number.

158761587 is a deficient number, since it is larger than the sum of its proper divisors (64422413).

158761587 is a wasteful number, since it uses less digits than its factorization.

158761587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530.

The product of its digits is 470400, while the sum is 48.

The square root of 158761587 is about 12600.0629760331. The cubic root of 158761587 is about 541.4792397801.

The spelling of 158761587 in words is "one hundred fifty-eight million, seven hundred sixty-one thousand, five hundred eighty-seven".