249426253 has 2 divisors, whose sum is σ = 249426254. Its totient is φ = 249426252.

The previous prime is 249426223. The next prime is 249426301. The reversal of 249426253 is 352624942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219099204 + 30327049 = 14802^2 + 5507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249426253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249426223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124713126 + 124713127.

It is an arithmetic number, because the mean of its divisors is an integer number (124713127).

Almost surely, 2^249426253 is an apocalyptic number.

It is an amenable number.

249426253 is a deficient number, since it is larger than the sum of its proper divisors (1).

249426253 is an equidigital number, since it uses as much as digits as its factorization.

249426253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 37.

The square root of 249426253 is about 15793.2344059094. The cubic root of 249426253 is about 629.4782385301.

The spelling of 249426253 in words is "two hundred forty-nine million, four hundred twenty-six thousand, two hundred fifty-three".