245135515 has 16 divisors (see below), whose sum is σ = 306292896. Its totient is φ = 188179200.

The previous prime is 245135497. The next prime is 245135519. The reversal of 245135515 is 515531542.

It is not a de Polignac number, because 245135515 - 2⁵ = 245135483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245135519) 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, 2704 + ... + 22306.

It is an arithmetic number, because the mean of its divisors is an integer number (19143306).

Almost surely, 2^245135515 is an apocalyptic number.

245135515 is a deficient number, since it is larger than the sum of its proper divisors (61157381).

245135515 is a wasteful number, since it uses less digits than its factorization.

245135515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19710.

The product of its digits is 15000, while the sum is 31.

The square root of 245135515 is about 15656.8041119508. The cubic root of 245135515 is about 625.8478221960.

The spelling of 245135515 in words is "two hundred forty-five million, one hundred thirty-five thousand, five hundred fifteen".