265145051 has 4 divisors (see below), whose sum is σ = 265195872. Its totient is φ = 265094232.

The previous prime is 265145047. The next prime is 265145059. The reversal of 265145051 is 150541562.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 265145051 - 2² = 265145047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265145059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16556 + ... + 28361.

It is an arithmetic number, because the mean of its divisors is an integer number (66298968).

Almost surely, 2^265145051 is an apocalyptic number.

265145051 is a deficient number, since it is larger than the sum of its proper divisors (50821).

265145051 is an equidigital number, since it uses as much as digits as its factorization.

265145051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50820.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 265145051 is about 16283.2751926632. The cubic root of 265145051 is about 642.4330006292.

The spelling of 265145051 in words is "two hundred sixty-five million, one hundred forty-five thousand, fifty-one".