249926081 has 2 divisors, whose sum is σ = 249926082. Its totient is φ = 249926080.

The previous prime is 249926077. The next prime is 249926093. The reversal of 249926081 is 180629942.

249926081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249924481 + 1600 = 15809^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 249926081 - 2² = 249926077 is a prime.

It is a super-4 number, since 4×249926081⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (249926051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124963040 + 124963041.

It is an arithmetic number, because the mean of its divisors is an integer number (124963041).

Almost surely, 2^249926081 is an apocalyptic number.

It is an amenable number.

249926081 is a deficient number, since it is larger than the sum of its proper divisors (1).

249926081 is an equidigital number, since it uses as much as digits as its factorization.

249926081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 249926081 is about 15809.0506040053. The cubic root of 249926081 is about 629.8984307577.

The spelling of 249926081 in words is "two hundred forty-nine million, nine hundred twenty-six thousand, eighty-one".