245763261 has 16 divisors (see below), whose sum is σ = 370267200. Its totient is φ = 161064144.

The previous prime is 245763251. The next prime is 245763263. The reversal of 245763261 is 162367542.

245763261 is a `hidden beast` number, since 24 + 576 + 3 + 2 + 61 = 666.

It is not a de Polignac number, because 245763261 - 2⁵ = 245763229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245763263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75546 + ... + 78731.

It is an arithmetic number, because the mean of its divisors is an integer number (23141700).

Almost surely, 2^245763261 is an apocalyptic number.

It is an amenable number.

245763261 is a deficient number, since it is larger than the sum of its proper divisors (124503939).

245763261 is a wasteful number, since it uses less digits than its factorization.

245763261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154345 (or 154339 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 245763261 is about 15676.8383610982. The cubic root of 245763261 is about 626.3815930573.

The spelling of 245763261 in words is "two hundred forty-five million, seven hundred sixty-three thousand, two hundred sixty-one".