249545083 has 4 divisors (see below), whose sum is σ = 253636048. Its totient is φ = 245454120.

The previous prime is 249545077. The next prime is 249545117. The reversal of 249545083 is 380545942.

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 249545083 - 2¹³ = 249536891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249545683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2045391 + ... + 2045512.

It is an arithmetic number, because the mean of its divisors is an integer number (63409012).

Almost surely, 2^249545083 is an apocalyptic number.

249545083 is a deficient number, since it is larger than the sum of its proper divisors (4090965).

249545083 is an equidigital number, since it uses as much as digits as its factorization.

249545083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090964.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 249545083 is about 15796.9960119005. The cubic root of 249545083 is about 629.5781866078.

The spelling of 249545083 in words is "two hundred forty-nine million, five hundred forty-five thousand, eighty-three".