245544493 has 4 divisors (see below), whose sum is σ = 245611008. Its totient is φ = 245477980.

The previous prime is 245544457. The next prime is 245544499. The reversal of 245544493 is 394445542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 394445542 = 2 ⋅197222771.

It is a cyclic number.

It is not a de Polignac number, because 245544493 - 2²⁵ = 211990061 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245544499) 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, 27373 + ... + 35218.

It is an arithmetic number, because the mean of its divisors is an integer number (61402752).

Almost surely, 2^245544493 is an apocalyptic number.

It is an amenable number.

245544493 is a deficient number, since it is larger than the sum of its proper divisors (66515).

245544493 is an equidigital number, since it uses as much as digits as its factorization.

245544493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66514.

The product of its digits is 345600, while the sum is 40.

The square root of 245544493 is about 15669.8593803518. The cubic root of 245544493 is about 626.1956784661.

The spelling of 245544493 in words is "two hundred forty-five million, five hundred forty-four thousand, four hundred ninety-three".