201456065 has 4 divisors (see below), whose sum is σ = 241747284. Its totient is φ = 161164848.

The previous prime is 201456043. The next prime is 201456067. The reversal of 201456065 is 560654102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560654102 = 2 ⋅280327051.

It can be written as a sum of positive squares in 2 ways, for example, as 111661489 + 89794576 = 10567^2 + 9476^2 .

It is a cyclic number.

It is not a de Polignac number, because 201456065 - 2¹⁰ = 201455041 is a prime.

It is a super-2 number, since 2×201456065² = 81169092250568450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201456067) 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, 20145602 + ... + 20145611.

It is an arithmetic number, because the mean of its divisors is an integer number (60436821).

Almost surely, 2^201456065 is an apocalyptic number.

It is an amenable number.

201456065 is a deficient number, since it is larger than the sum of its proper divisors (40291219).

201456065 is an equidigital number, since it uses as much as digits as its factorization.

201456065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40291218.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 201456065 is about 14193.5219378419. The cubic root of 201456065 is about 586.2193040879.

The spelling of 201456065 in words is "two hundred one million, four hundred fifty-six thousand, sixty-five".