245901391 has 8 divisors (see below), whose sum is σ = 251841920. Its totient is φ = 239971032.

The previous prime is 245901389. The next prime is 245901427. The reversal of 245901391 is 193109542.

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

It is a cyclic number.

It is not a de Polignac number, because 245901391 - 2¹ = 245901389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245901091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72430 + ... + 75748.

It is an arithmetic number, because the mean of its divisors is an integer number (31480240).

Almost surely, 2^245901391 is an apocalyptic number.

245901391 is a deficient number, since it is larger than the sum of its proper divisors (5940529).

245901391 is a wasteful number, since it uses less digits than its factorization.

245901391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 245901391 is about 15681.2432861684. The cubic root of 245901391 is about 626.4989226158.

The spelling of 245901391 in words is "two hundred forty-five million, nine hundred one thousand, three hundred ninety-one".