245109564 has 90 divisors (see below), whose sum is σ = 745427760. Its totient is φ = 70026768.

The previous prime is 245109563. The next prime is 245109581. The reversal of 245109564 is 465901542.

245109564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245109563) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 8157 + ... + 23595.

Almost surely, 2^245109564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245109564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372713880).

245109564 is an abundant number, since it is smaller than the sum of its proper divisors (500318196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245109564 is a wasteful number, since it uses less digits than its factorization.

245109564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15469 (or 15451 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 245109564 is about 15655.9753448963. The cubic root of 245109564 is about 625.8257365209.

The spelling of 245109564 in words is "two hundred forty-five million, one hundred nine thousand, five hundred sixty-four".