1245451 has 2 divisors, whose sum is σ = 1245452. Its totient is φ = 1245450.

The previous prime is 1245449. The next prime is 1245479. The reversal of 1245451 is 1545421.

It is a weak prime.

It is an emirp because it is prime and its reverse (1545421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1245451 - 2¹ = 1245449 is a prime.

It is a super-2 number, since 2×1245451² = 3102296386802, which contains 22 as substring.

Together with 1245449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1245401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622725 + 622726.

It is an arithmetic number, because the mean of its divisors is an integer number (622726).

2^1245451 is an apocalyptic number.

1245451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245451 is an equidigital number, since it uses as much as digits as its factorization.

1245451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800, while the sum is 22.

The square root of 1245451 is about 1115.9977598544. The cubic root of 1245451 is about 107.5909020191.

The spelling of 1245451 in words is "one million, two hundred forty-five thousand, four hundred fifty-one".