245515045 has 4 divisors (see below), whose sum is σ = 294618060. Its totient is φ = 196412032.

The previous prime is 245515033. The next prime is 245515069. The reversal of 245515045 is 540515542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162231169 + 83283876 = 12737^2 + 9126^2 .

It is a cyclic number.

It is not a de Polignac number, because 245515045 - 2⁷ = 245514917 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 245514998 and 245515016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24551500 + ... + 24551509.

It is an arithmetic number, because the mean of its divisors is an integer number (73654515).

Almost surely, 2^245515045 is an apocalyptic number.

It is an amenable number.

245515045 is a deficient number, since it is larger than the sum of its proper divisors (49103015).

245515045 is an equidigital number, since it uses as much as digits as its factorization.

245515045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49103014.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 245515045 is about 15668.9197138794. The cubic root of 245515045 is about 626.1706443778.

The spelling of 245515045 in words is "two hundred forty-five million, five hundred fifteen thousand, forty-five".