245213715 has 16 divisors (see below), whose sum is σ = 412992000. Its totient is φ = 123897312.

The previous prime is 245213713. The next prime is 245213783. The reversal of 245213715 is 517312542.

It is not a de Polignac number, because 245213715 - 2¹ = 245213713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245213713) 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, 429915 + ... + 430484.

It is an arithmetic number, because the mean of its divisors is an integer number (25812000).

Almost surely, 2^245213715 is an apocalyptic number.

245213715 is a deficient number, since it is larger than the sum of its proper divisors (167778285).

245213715 is a wasteful number, since it uses less digits than its factorization.

245213715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860426.

The product of its digits is 8400, while the sum is 30.

The square root of 245213715 is about 15659.3012296207. The cubic root of 245213715 is about 625.9143651126.

The spelling of 245213715 in words is "two hundred forty-five million, two hundred thirteen thousand, seven hundred fifteen".