245507329 has 4 divisors (see below), whose sum is σ = 245582676. Its totient is φ = 245431984.

The previous prime is 245507323. The next prime is 245507333. The reversal of 245507329 is 923705542.

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 103063104 + 142444225 = 10152^2 + 11935^2 .

It is a cyclic number.

It is not a de Polignac number, because 245507329 - 2²¹ = 243410177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245507323) 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, 32554 + ... + 39379.

It is an arithmetic number, because the mean of its divisors is an integer number (61395669).

Almost surely, 2^245507329 is an apocalyptic number.

It is an amenable number.

245507329 is a deficient number, since it is larger than the sum of its proper divisors (75347).

245507329 is an equidigital number, since it uses as much as digits as its factorization.

245507329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75346.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 245507329 is about 15668.6734920350. The cubic root of 245507329 is about 626.1640845852.

The spelling of 245507329 in words is "two hundred forty-five million, five hundred seven thousand, three hundred twenty-nine".