158561039 has 12 divisors (see below), whose sum is σ = 196225776. Its totient is φ = 125453952.

The previous prime is 158561017. The next prime is 158561047. The reversal of 158561039 is 930165851.

It is not a de Polignac number, because 158561039 - 2⁸ = 158560783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158560993 and 158561011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158561059) 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, 65834 + ... + 68199.

It is an arithmetic number, because the mean of its divisors is an integer number (16352148).

Almost surely, 2^158561039 is an apocalyptic number.

158561039 is a deficient number, since it is larger than the sum of its proper divisors (37664737).

158561039 is a wasteful number, since it uses less digits than its factorization.

158561039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134066 (or 134053 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 158561039 is about 12592.1022470436. The cubic root of 158561039 is about 541.2511444381.

The spelling of 158561039 in words is "one hundred fifty-eight million, five hundred sixty-one thousand, thirty-nine".