201560399 has 4 divisors (see below), whose sum is σ = 203099160. Its totient is φ = 200021640.

The previous prime is 201560389. The next prime is 201560467. The reversal of 201560399 is 993065102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201560399 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 (201560309) 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, 769184 + ... + 769445.

It is an arithmetic number, because the mean of its divisors is an integer number (50774790).

Almost surely, 2^201560399 is an apocalyptic number.

201560399 is a deficient number, since it is larger than the sum of its proper divisors (1538761).

201560399 is a wasteful number, since it uses less digits than its factorization.

201560399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538760.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 201560399 is about 14197.1968712137. The cubic root of 201560399 is about 586.3204875216.

The spelling of 201560399 in words is "two hundred one million, five hundred sixty thousand, three hundred ninety-nine".