245515005523 has 4 divisors (see below), whose sum is σ = 245562972160. Its totient is φ = 245467038888.

The previous prime is 245515005521. The next prime is 245515005551. The reversal of 245515005523 is 325500515542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325500515542 = 2 ⋅162750257771.

It is a cyclic number.

It is not a de Polignac number, because 245515005523 - 2¹ = 245515005521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245515005521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23975640 + ... + 23985877.

It is an arithmetic number, because the mean of its divisors is an integer number (61390743040).

Almost surely, 2^245515005523 is an apocalyptic number.

245515005523 is a deficient number, since it is larger than the sum of its proper divisors (47966637).

245515005523 is an equidigital number, since it uses as much as digits as its factorization.

245515005523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47966636.

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 245515005523 in words is "two hundred forty-five billion, five hundred fifteen million, five thousand, five hundred twenty-three".