265097391 has 8 divisors (see below), whose sum is σ = 380652720. Its totient is φ = 163136832.

The previous prime is 265097363. The next prime is 265097423. The reversal of 265097391 is 193790562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 265097391 - 2¹⁴ = 265081007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265097311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3398646 + ... + 3398723.

It is an arithmetic number, because the mean of its divisors is an integer number (47581590).

Almost surely, 2^265097391 is an apocalyptic number.

265097391 is a deficient number, since it is larger than the sum of its proper divisors (115555329).

265097391 is a wasteful number, since it uses less digits than its factorization.

265097391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6797385.

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 265097391 is about 16281.8116620971. The cubic root of 265097391 is about 642.3945057356.

The spelling of 265097391 in words is "two hundred sixty-five million, ninety-seven thousand, three hundred ninety-one".