245250161521 has 8 divisors (see below), whose sum is σ = 252948138624. Its totient is φ = 237655513200.

The previous prime is 245250161473. The next prime is 245250161561. The reversal of 245250161521 is 125161052542.

245250161521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 245250161521 - 2²⁵ = 245216607089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245250161561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25827375 + ... + 25836868.

It is an arithmetic number, because the mean of its divisors is an integer number (31618517328).

Almost surely, 2^245250161521 is an apocalyptic number.

It is an amenable number.

245250161521 is a deficient number, since it is larger than the sum of its proper divisors (7697977103).

245250161521 is a wasteful number, since it uses less digits than its factorization.

245250161521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51664391.

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 245250161521 in words is "two hundred forty-five billion, two hundred fifty million, one hundred sixty-one thousand, five hundred twenty-one".