1559431 has 2 divisors, whose sum is σ = 1559432. Its totient is φ = 1559430.

The previous prime is 1559407. The next prime is 1559443. The reversal of 1559431 is 1349551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1559431 - 2⁵ = 1559399 is a prime.

It is a super-2 number, since 2×1559431² = 4863650087522, which contains 22 as substring.

1559431 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1559431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1559491) 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, 779715 + 779716.

It is an arithmetic number, because the mean of its divisors is an integer number (779716).

2^1559431 is an apocalyptic number.

1559431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1559431 is an equidigital number, since it uses as much as digits as its factorization.

1559431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 28.

The square root of 1559431 is about 1248.7717966066. The cubic root of 1559431 is about 115.9636975186.

It can be divided in two parts, 15594 and 31, that added together give a 6-th power (15625 = 5⁶).

The spelling of 1559431 in words is "one million, five hundred fifty-nine thousand, four hundred thirty-one".