158057687 has 4 divisors (see below), whose sum is σ = 167355216. Its totient is φ = 148760160.

The previous prime is 158057639. The next prime is 158057689. The reversal of 158057687 is 786750851.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786750851 = 503 ⋅1564117.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158057687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158057689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4648739 + ... + 4648772.

It is an arithmetic number, because the mean of its divisors is an integer number (41838804).

Almost surely, 2^158057687 is an apocalyptic number.

158057687 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

158057687 is a deficient number, since it is larger than the sum of its proper divisors (9297529).

158057687 is an equidigital number, since it uses as much as digits as its factorization.

158057687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9297528.

The product of its (nonzero) digits is 470400, while the sum is 47.

The square root of 158057687 is about 12572.0995462174. The cubic root of 158057687 is about 540.6778034205.

The spelling of 158057687 in words is "one hundred fifty-eight million, fifty-seven thousand, six hundred eighty-seven".