1497997 has 2 divisors, whose sum is σ = 1497998. Its totient is φ = 1497996.

The previous prime is 1497983. The next prime is 1498001. The reversal of 1497997 is 7997941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1425636 + 72361 = 1194^2 + 269^2 .

It is a cyclic number.

It is not a de Polignac number, because 1497997 - 2⁷ = 1497869 is a prime.

It is a super-3 number, since 3×1497997³ = 10084493388013337919, which contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1498997) 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 as a sum of consecutive naturals, namely, 748998 + 748999.

It is an arithmetic number, because the mean of its divisors is an integer number (748999).

2^1497997 is an apocalyptic number.

It is an amenable number.

1497997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1497997 is an equidigital number, since it uses as much as digits as its factorization.

1497997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 46.

The square root of 1497997 is about 1223.9268769007. The cubic root of 1497997 is about 114.4204490561.

The spelling of 1497997 in words is "one million, four hundred ninety-seven thousand, nine hundred ninety-seven".