249318001 has 2 divisors, whose sum is σ = 249318002. Its totient is φ = 249318000.

The previous prime is 249317993. The next prime is 249318031. The reversal of 249318001 is 100813942.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196028001 + 53290000 = 14001^2 + 7300^2 .

It is a cyclic number.

It is not a de Polignac number, because 249318001 - 2³ = 249317993 is a prime.

It is not a weakly prime, because it can be changed into another prime (249318031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124659000 + 124659001.

It is an arithmetic number, because the mean of its divisors is an integer number (124659001).

Almost surely, 2^249318001 is an apocalyptic number.

It is an amenable number.

249318001 is a deficient number, since it is larger than the sum of its proper divisors (1).

249318001 is an equidigital number, since it uses as much as digits as its factorization.

249318001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 249318001 is about 15789.8068702565. The cubic root of 249318001 is about 629.3871599878.

The spelling of 249318001 in words is "two hundred forty-nine million, three hundred eighteen thousand, one".