1405597 has 2 divisors, whose sum is σ = 1405598. Its totient is φ = 1405596.

The previous prime is 1405583. The next prime is 1405631. The reversal of 1405597 is 7955041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1038361 + 367236 = 1019^2 + 606^2 .

It is an emirp because it is prime and its reverse (7955041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1405597 - 2¹⁵ = 1372829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1405097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702798 + 702799.

It is an arithmetic number, because the mean of its divisors is an integer number (702799).

2^1405597 is an apocalyptic number.

It is an amenable number.

1405597 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405597 is an equidigital number, since it uses as much as digits as its factorization.

1405597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 1405597 is about 1185.5787616181. The cubic root of 1405597 is about 112.0177746025.

It can be divided in two parts, 1405 and 597, that added together give a palindrome (2002).

The spelling of 1405597 in words is "one million, four hundred five thousand, five hundred ninety-seven".