245505231 has 6 divisors (see below), whose sum is σ = 354618680. Its totient is φ = 163670148.

The previous prime is 245505229. The next prime is 245505257. The reversal of 245505231 is 132505542.

It is a happy number.

It is not a de Polignac number, because 245505231 - 2¹ = 245505229 is a prime.

It is a super-2 number, since 2×245505231² = 120545636896726722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245505195 and 245505204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245505031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13639171 + ... + 13639188.

Almost surely, 2^245505231 is an apocalyptic number.

245505231 is a deficient number, since it is larger than the sum of its proper divisors (109113449).

245505231 is a wasteful number, since it uses less digits than its factorization.

245505231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27278365 (or 27278362 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 245505231 is about 15668.6065430210. The cubic root of 245505231 is about 626.1623009372.

The spelling of 245505231 in words is "two hundred forty-five million, five hundred five thousand, two hundred thirty-one".