1415881 has 2 divisors, whose sum is σ = 1415882. Its totient is φ = 1415880.

The previous prime is 1415851. The next prime is 1415929. The reversal of 1415881 is 1885141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1299600 + 116281 = 1140^2 + 341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1415881 - 2⁷ = 1415753 is a prime.

It is a super-2 number, since 2×1415881² = 4009438012322, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1415831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 707940 + 707941.

It is an arithmetic number, because the mean of its divisors is an integer number (707941).

2^1415881 is an apocalyptic number.

It is an amenable number.

1415881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1415881 is an equidigital number, since it uses as much as digits as its factorization.

1415881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280, while the sum is 28.

The square root of 1415881 is about 1189.9079796354. The cubic root of 1415881 is about 112.2903023750.

The spelling of 1415881 in words is "one million, four hundred fifteen thousand, eight hundred eighty-one".