2081457 has 20 divisors (see below), whose sum is σ = 3554496. Its totient is φ = 1189080.

The previous prime is 2081437. The next prime is 2081467. The reversal of 2081457 is 7541802.

2081457 is a `hidden beast` number, since 208 + 1 + 457 = 666.

It is not a de Polignac number, because 2081457 - 2¹⁰ = 2080433 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2081457.

It is not an unprimeable number, because it can be changed into a prime (2081407) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1269 + ... + 2402.

2^2081457 is an apocalyptic number.

2081457 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2081457 is a deficient number, since it is larger than the sum of its proper divisors (1473039).

2081457 is an equidigital number, since it uses as much as digits as its factorization.

2081457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 2081457 is about 1442.7255456254. The cubic root of 2081457 is about 127.6798844973.

The spelling of 2081457 in words is "two million, eighty-one thousand, four hundred fifty-seven".