1355857 has 2 divisors, whose sum is σ = 1355858. Its totient is φ = 1355856.

The previous prime is 1355843. The next prime is 1355863. The reversal of 1355857 is 7585531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1354896 + 961 = 1164^2 + 31^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355857 - 2¹¹ = 1353809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677928 + 677929.

It is an arithmetic number, because the mean of its divisors is an integer number (677929).

2^1355857 is an apocalyptic number.

It is an amenable number.

1355857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355857 is an equidigital number, since it uses as much as digits as its factorization.

1355857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 34.

The square root of 1355857 is about 1164.4127275155. The cubic root of 1355857 is about 110.6805467583.

The spelling of 1355857 in words is "one million, three hundred fifty-five thousand, eight hundred fifty-seven".