249172563 has 8 divisors (see below), whose sum is σ = 332310528. Its totient is φ = 166074824.

The previous prime is 249172549. The next prime is 249172589. The reversal of 249172563 is 365271942.

249172563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249172563 - 2⁸ = 249172307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249170563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10270 + ... + 24572.

It is an arithmetic number, because the mean of its divisors is an integer number (41538816).

Almost surely, 2^249172563 is an apocalyptic number.

249172563 is a deficient number, since it is larger than the sum of its proper divisors (83137965).

249172563 is a wasteful number, since it uses less digits than its factorization.

249172563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20113.

The product of its digits is 90720, while the sum is 39.

The square root of 249172563 is about 15785.2007589387. The cubic root of 249172563 is about 629.2647532431.

The spelling of 249172563 in words is "two hundred forty-nine million, one hundred seventy-two thousand, five hundred sixty-three".