248877491 has 2 divisors, whose sum is σ = 248877492. Its totient is φ = 248877490.

The previous prime is 248877481. The next prime is 248877493. The reversal of 248877491 is 194778842.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 248877491 - 2²⁶ = 181768627 is a prime.

Together with 248877493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (248877493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124438745 + 124438746.

It is an arithmetic number, because the mean of its divisors is an integer number (124438746).

Almost surely, 2^248877491 is an apocalyptic number.

248877491 is a deficient number, since it is larger than the sum of its proper divisors (1).

248877491 is an equidigital number, since it uses as much as digits as its factorization.

248877491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 50.

The square root of 248877491 is about 15775.8515142606. The cubic root of 248877491 is about 629.0162617971.

The spelling of 248877491 in words is "two hundred forty-eight million, eight hundred seventy-seven thousand, four hundred ninety-one".