1500397 has 2 divisors, whose sum is σ = 1500398. Its totient is φ = 1500396.

The previous prime is 1500379. The next prime is 1500407. The reversal of 1500397 is 7930051.

1500397 is nontrivially palindromic in base 2.

Together with previous prime (1500379) 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., 1153476 + 346921 = 1074^2 + 589^2 .

It is a cyclic number.

It is not a de Polignac number, because 1500397 - 2⁷ = 1500269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1500337) 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, 750198 + 750199.

It is an arithmetic number, because the mean of its divisors is an integer number (750199).

2^1500397 is an apocalyptic number.

It is an amenable number.

1500397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1500397 is an equidigital number, since it uses as much as digits as its factorization.

1500397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 1500397 is about 1224.9069352404. The cubic root of 1500397 is about 114.4815222879.

The spelling of 1500397 in words is "one million, five hundred thousand, three hundred ninety-seven".