1248551 has 2 divisors, whose sum is σ = 1248552. Its totient is φ = 1248550.

The previous prime is 1248539. The next prime is 1248553. The reversal of 1248551 is 1558421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1248551 - 2¹⁰ = 1247527 is a prime.

Together with 1248553, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1248551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1248553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624275 + 624276.

It is an arithmetic number, because the mean of its divisors is an integer number (624276).

2^1248551 is an apocalyptic number.

1248551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248551 is an equidigital number, since it uses as much as digits as its factorization.

1248551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 26.

The square root of 1248551 is about 1117.3857883471. The cubic root of 1248551 is about 107.6800947296.

The spelling of 1248551 in words is "one million, two hundred forty-eight thousand, five hundred fifty-one".