361555985 has 8 divisors (see below), whose sum is σ = 495848256. Its totient is φ = 247924080.

The previous prime is 361555969. The next prime is 361555993. The reversal of 361555985 is 589555163.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 361555985 - 2⁴ = 361555969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5165051 + ... + 5165120.

It is an arithmetic number, because the mean of its divisors is an integer number (61981032).

Almost surely, 2^361555985 is an apocalyptic number.

361555985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

361555985 is a deficient number, since it is larger than the sum of its proper divisors (134292271).

361555985 is a wasteful number, since it uses less digits than its factorization.

361555985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10330183.

The product of its digits is 810000, while the sum is 47.

The square root of 361555985 is about 19014.6255550826. The cubic root of 361555985 is about 712.4020901677.

The spelling of 361555985 in words is "three hundred sixty-one million, five hundred fifty-five thousand, nine hundred eighty-five".