248837221 has 2 divisors, whose sum is σ = 248837222. Its totient is φ = 248837220.

The previous prime is 248837209. The next prime is 248837227. The reversal of 248837221 is 122738842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174636225 + 74200996 = 13215^2 + 8614^2 .

It is a cyclic number.

It is not a de Polignac number, because 248837221 - 2⁵ = 248837189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248837227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124418610 + 124418611.

It is an arithmetic number, because the mean of its divisors is an integer number (124418611).

Almost surely, 2^248837221 is an apocalyptic number.

It is an amenable number.

248837221 is a deficient number, since it is larger than the sum of its proper divisors (1).

248837221 is an equidigital number, since it uses as much as digits as its factorization.

248837221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 37.

The square root of 248837221 is about 15774.5751448335. The cubic root of 248837221 is about 628.9823336569.

The spelling of 248837221 in words is "two hundred forty-eight million, eight hundred thirty-seven thousand, two hundred twenty-one".