245275290 has 80 divisors (see below), whose sum is σ = 710280648. Its totient is φ = 60372864.

The previous prime is 245275279. The next prime is 245275297. The reversal of 245275290 is 92572542.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 79869969 + 165405321 = 8937^2 + 12861^2 .

It is not an unprimeable number, because it can be changed into a prime (245275297) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1117 + ... + 22176.

Almost surely, 2^245275290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245275290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355140324).

245275290 is an abundant number, since it is smaller than the sum of its proper divisors (465005358).

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

245275290 is a wasteful number, since it uses less digits than its factorization.

245275290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23325 (or 23316 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 245275290 is about 15661.2671901095. The cubic root of 245275290 is about 625.9667513227.

The spelling of 245275290 in words is "two hundred forty-five million, two hundred seventy-five thousand, two hundred ninety".