249523273 has 2 divisors, whose sum is σ = 249523274. Its totient is φ = 249523272.

The previous prime is 249523243. The next prime is 249523283. The reversal of 249523273 is 372325942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126157824 + 123365449 = 11232^2 + 11107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249523273 is a prime.

It is not a weakly prime, because it can be changed into another prime (249523243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124761636 + 124761637.

It is an arithmetic number, because the mean of its divisors is an integer number (124761637).

Almost surely, 2^249523273 is an apocalyptic number.

It is an amenable number.

249523273 is a deficient number, since it is larger than the sum of its proper divisors (1).

249523273 is an equidigital number, since it uses as much as digits as its factorization.

249523273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 37.

The square root of 249523273 is about 15796.3056756952. The cubic root of 249523273 is about 629.5598445643.

The spelling of 249523273 in words is "two hundred forty-nine million, five hundred twenty-three thousand, two hundred seventy-three".