248091881 has 2 divisors, whose sum is σ = 248091882. Its totient is φ = 248091880.

The previous prime is 248091859. The next prime is 248091889. The reversal of 248091881 is 188190842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240715225 + 7376656 = 15515^2 + 2716^2 .

It is a cyclic number.

It is not a de Polignac number, because 248091881 - 2⁶ = 248091817 is a prime.

It is a super-2 number, since 2×248091881² = 123099162836236322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (248091889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124045940 + 124045941.

It is an arithmetic number, because the mean of its divisors is an integer number (124045941).

Almost surely, 2^248091881 is an apocalyptic number.

It is an amenable number.

248091881 is a deficient number, since it is larger than the sum of its proper divisors (1).

248091881 is an equidigital number, since it uses as much as digits as its factorization.

248091881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 248091881 is about 15750.9327025418. The cubic root of 248091881 is about 628.3537104670.

The spelling of 248091881 in words is "two hundred forty-eight million, ninety-one thousand, eight hundred eighty-one".