1451997 has 6 divisors (see below), whose sum is σ = 2097342. Its totient is φ = 967992.

The previous prime is 1451969. The next prime is 1452047. The reversal of 1451997 is 7991541.

It can be written as a sum of positive squares in only one way, i.e., 1028196 + 423801 = 1014^2 + 651^2 .

It is not a de Polignac number, because 1451997 - 2⁸ = 1451741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80658 + ... + 80675.

It is an arithmetic number, because the mean of its divisors is an integer number (349557).

2^1451997 is an apocalyptic number.

It is an amenable number.

1451997 is a deficient number, since it is larger than the sum of its proper divisors (645345).

1451997 is a wasteful number, since it uses less digits than its factorization.

1451997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161339 (or 161336 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 1451997 is about 1204.9883816867. The cubic root of 1451997 is about 113.2370568370.

The spelling of 1451997 in words is "one million, four hundred fifty-one thousand, nine hundred ninety-seven".