245340513 has 12 divisors (see below), whose sum is σ = 386597328. Its totient is φ = 148691160.

The previous prime is 245340509. The next prime is 245340523. The reversal of 245340513 is 315043542.

245340513 is a `hidden beast` number, since 245 + 3 + 405 + 13 = 666.

It is not a de Polignac number, because 245340513 - 2² = 245340509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245340523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1238995 + ... + 1239192.

It is an arithmetic number, because the mean of its divisors is an integer number (32216444).

Almost surely, 2^245340513 is an apocalyptic number.

It is an amenable number.

245340513 is a deficient number, since it is larger than the sum of its proper divisors (141256815).

245340513 is a wasteful number, since it uses less digits than its factorization.

245340513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478204 (or 2478201 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 245340513 is about 15663.3493544644. The cubic root of 245340513 is about 626.0222315833.

The spelling of 245340513 in words is "two hundred forty-five million, three hundred forty thousand, five hundred thirteen".