1351885 has 8 divisors (see below), whose sum is σ = 1638936. Its totient is φ = 1070400.

The previous prime is 1351853. The next prime is 1351897. The reversal of 1351885 is 5881531.

It can be written as a sum of positive squares in 4 ways, for example, as 110889 + 1240996 = 333^2 + 1114^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1351885 - 2⁵ = 1351853 is a prime.

It is a Duffinian number.

1351885 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834 + ... + 1843.

It is an arithmetic number, because the mean of its divisors is an integer number (204867).

2^1351885 is an apocalyptic number.

It is an amenable number.

1351885 is a deficient number, since it is larger than the sum of its proper divisors (287051).

1351885 is a wasteful number, since it uses less digits than its factorization.

1351885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783.

The product of its digits is 4800, while the sum is 31.

The square root of 1351885 is about 1162.7058957449. The cubic root of 1351885 is about 110.5723610313.

The spelling of 1351885 in words is "one million, three hundred fifty-one thousand, eight hundred eighty-five".