245535391 has 2 divisors, whose sum is σ = 245535392. Its totient is φ = 245535390.

The previous prime is 245535383. The next prime is 245535439. The reversal of 245535391 is 193535542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245535391 - 2³ = 245535383 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245535391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245535341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122767695 + 122767696.

It is an arithmetic number, because the mean of its divisors is an integer number (122767696).

Almost surely, 2^245535391 is an apocalyptic number.

245535391 is a deficient number, since it is larger than the sum of its proper divisors (1).

245535391 is an equidigital number, since it uses as much as digits as its factorization.

245535391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 37.

The square root of 245535391 is about 15669.5689474854. The cubic root of 245535391 is about 626.1879409635.

The spelling of 245535391 in words is "two hundred forty-five million, five hundred thirty-five thousand, three hundred ninety-one".