1351859 has 4 divisors (see below), whose sum is σ = 1372104. Its totient is φ = 1331616.

The previous prime is 1351853. The next prime is 1351897. The reversal of 1351859 is 9581531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9581531 = 283 ⋅33857.

It is a cyclic number.

It is not a de Polignac number, because 1351859 - 2⁴ = 1351843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10022 + ... + 10155.

It is an arithmetic number, because the mean of its divisors is an integer number (343026).

2^1351859 is an apocalyptic number.

1351859 is a deficient number, since it is larger than the sum of its proper divisors (20245).

1351859 is an equidigital number, since it uses as much as digits as its factorization.

1351859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20244.

The product of its digits is 5400, while the sum is 32.

The square root of 1351859 is about 1162.6947148757. The cubic root of 1351859 is about 110.5716521693.

The spelling of 1351859 in words is "one million, three hundred fifty-one thousand, eight hundred fifty-nine".