1597951 has 2 divisors, whose sum is σ = 1597952. Its totient is φ = 1597950.

The previous prime is 1597943. The next prime is 1597961.

It is a happy number.

1597951 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 1597951 - 2³ = 1597943 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1597951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1597931) 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, 798975 + 798976.

It is an arithmetic number, because the mean of its divisors is an integer number (798976).

2^1597951 is an apocalyptic number.

1597951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1597951 is an equidigital number, since it uses as much as digits as its factorization.

1597951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14175, while the sum is 37.

The square root of 1597951 is about 1264.1008662286. The cubic root of 1597951 is about 116.9107605976.

The spelling of 1597951 in words is "one million, five hundred ninety-seven thousand, nine hundred fifty-one".