1533397 has 2 divisors, whose sum is σ = 1533398. Its totient is φ = 1533396.

The previous prime is 1533379. The next prime is 1533401. The reversal of 1533397 is 7933351.

Together with previous prime (1533379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1454436 + 78961 = 1206^2 + 281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1533397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1533307) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 766698 + 766699.

It is an arithmetic number, because the mean of its divisors is an integer number (766699).

2^1533397 is an apocalyptic number.

It is an amenable number.

1533397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1533397 is an equidigital number, since it uses as much as digits as its factorization.

1533397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8505, while the sum is 31.

The square root of 1533397 is about 1238.3040822028. The cubic root of 1533397 is about 115.3147521122.

The spelling of 1533397 in words is "one million, five hundred thirty-three thousand, three hundred ninety-seven".