245378453 has 4 divisors (see below), whose sum is σ = 245579340. Its totient is φ = 245177568.

The previous prime is 245378447. The next prime is 245378491. The reversal of 245378453 is 354873542.

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 211935364 + 33443089 = 14558^2 + 5783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245378453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245378453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245378443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98600 + ... + 101057.

It is an arithmetic number, because the mean of its divisors is an integer number (61394835).

Almost surely, 2^245378453 is an apocalyptic number.

It is an amenable number.

245378453 is a deficient number, since it is larger than the sum of its proper divisors (200887).

245378453 is a wasteful number, since it uses less digits than its factorization.

245378453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200886.

The product of its digits is 403200, while the sum is 41.

The square root of 245378453 is about 15664.5604151537. The cubic root of 245378453 is about 626.0544997412.

The spelling of 245378453 in words is "two hundred forty-five million, three hundred seventy-eight thousand, four hundred fifty-three".