249355097 has 2 divisors, whose sum is σ = 249355098. Its totient is φ = 249355096.

The previous prime is 249355037. The next prime is 249355109. The reversal of 249355097 is 790553942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175721536 + 73633561 = 13256^2 + 8581^2 .

It is a cyclic number.

It is not a de Polignac number, because 249355097 - 2²⁰ = 248306521 is a prime.

It is not a weakly prime, because it can be changed into another prime (249355037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124677548 + 124677549.

It is an arithmetic number, because the mean of its divisors is an integer number (124677549).

Almost surely, 2^249355097 is an apocalyptic number.

It is an amenable number.

249355097 is a deficient number, since it is larger than the sum of its proper divisors (1).

249355097 is an equidigital number, since it uses as much as digits as its factorization.

249355097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 249355097 is about 15790.9815084434. The cubic root of 249355097 is about 629.4183739235.

The spelling of 249355097 in words is "two hundred forty-nine million, three hundred fifty-five thousand, ninety-seven".