155713985 has 16 divisors (see below), whose sum is σ = 214211712. Its totient is φ = 106444800.

The previous prime is 155713969. The next prime is 155713993. The reversal of 155713985 is 589317551.

It is a happy number.

It is not a de Polignac number, because 155713985 - 2⁴ = 155713969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4865 + ... + 18305.

It is an arithmetic number, because the mean of its divisors is an integer number (13388232).

Almost surely, 2^155713985 is an apocalyptic number.

It is an amenable number.

155713985 is a deficient number, since it is larger than the sum of its proper divisors (58497727).

155713985 is a wasteful number, since it uses less digits than its factorization.

155713985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13784.

The product of its digits is 189000, while the sum is 44.

The square root of 155713985 is about 12478.5409804191. The cubic root of 155713985 is about 537.9920685849.

The spelling of 155713985 in words is "one hundred fifty-five million, seven hundred thirteen thousand, nine hundred eighty-five".