265493801 has 4 divisors (see below), whose sum is σ = 270503172. Its totient is φ = 260484432.

The previous prime is 265493797. The next prime is 265493803. The reversal of 265493801 is 108394562.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 108394562 = 2 ⋅54197281.

It can be written as a sum of positive squares in 2 ways, for example, as 101525776 + 163968025 = 10076^2 + 12805^2 .

It is a cyclic number.

It is not a de Polignac number, because 265493801 - 2² = 265493797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265493803) 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, 2504606 + ... + 2504711.

It is an arithmetic number, because the mean of its divisors is an integer number (67625793).

Almost surely, 2^265493801 is an apocalyptic number.

It is an amenable number.

265493801 is a deficient number, since it is larger than the sum of its proper divisors (5009371).

265493801 is an equidigital number, since it uses as much as digits as its factorization.

265493801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5009370.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 265493801 is about 16293.9805142881. The cubic root of 265493801 is about 642.7145450746.

The spelling of 265493801 in words is "two hundred sixty-five million, four hundred ninety-three thousand, eight hundred one".