245515145 has 8 divisors (see below), whose sum is σ = 295323840. Its totient is φ = 195941680.

The previous prime is 245515121. The next prime is 245515163. The reversal of 245515145 is 541515542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245515145 - 2¹⁴ = 245498761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56501 + ... + 60690.

It is an arithmetic number, because the mean of its divisors is an integer number (36915480).

Almost surely, 2^245515145 is an apocalyptic number.

It is an amenable number.

245515145 is a deficient number, since it is larger than the sum of its proper divisors (49808695).

245515145 is a wasteful number, since it uses less digits than its factorization.

245515145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117615.

The product of its digits is 20000, while the sum is 32.

The square root of 245515145 is about 15668.9229049096. The cubic root of 245515145 is about 626.1707293924.

The spelling of 245515145 in words is "two hundred forty-five million, five hundred fifteen thousand, one hundred forty-five".