249048511 has 4 divisors (see below), whose sum is σ = 249365752. Its totient is φ = 248731272.

The previous prime is 249048509. The next prime is 249048533. The reversal of 249048511 is 115840942.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249048511 - 2¹ = 249048509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249048311) 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, 157440 + ... + 159013.

It is an arithmetic number, because the mean of its divisors is an integer number (62341438).

Almost surely, 2^249048511 is an apocalyptic number.

249048511 is a deficient number, since it is larger than the sum of its proper divisors (317241).

249048511 is an equidigital number, since it uses as much as digits as its factorization.

249048511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317240.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 249048511 is about 15781.2708930555. The cubic root of 249048511 is about 629.1603082107.

The spelling of 249048511 in words is "two hundred forty-nine million, forty-eight thousand, five hundred eleven".