2015920201 has 9 divisors (see below), whose sum is σ = 2053365703. Its totient is φ = 1979147920.

The previous prime is 2015920177. The next prime is 2015920217. The reversal of 2015920201 is 1020295102.

The square root of 2015920201 is 44899.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5294601 + 2010625600 = 2301^2 + 44840^2 .

It is not a de Polignac number, because 2015920201 - 2⁷ = 2015920073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2015920601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2648661 + ... + 2649421.

Almost surely, 2^2015920201 is an apocalyptic number.

2015920201 is the 44899-th square number.

2015920201 is the 22450-th centered octagonal number.

It is an amenable number.

2015920201 is a deficient number, since it is larger than the sum of its proper divisors (37445502).

2015920201 is an frugal number, since it uses more digits than its factorization.

2015920201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The cubic root of 2015920201 is about 1263.2552513491.

The spelling of 2015920201 in words is "two billion, fifteen million, nine hundred twenty thousand, two hundred one".