2051455 has 8 divisors (see below), whose sum is σ = 2813472. Its totient is φ = 1406688.

The previous prime is 2051443. The next prime is 2051459. The reversal of 2051455 is 5541502.

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

It is a cyclic number.

It is not a de Polignac number, because 2051455 - 2⁷ = 2051327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29272 + ... + 29341.

It is an arithmetic number, because the mean of its divisors is an integer number (351684).

2^2051455 is an apocalyptic number.

2051455 is a deficient number, since it is larger than the sum of its proper divisors (762017).

2051455 is an equidigital number, since it uses as much as digits as its factorization.

2051455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58625.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 2051455 is about 1432.2901242416. The cubic root of 2051455 is about 127.0634564153.

Adding to 2051455 its reverse (5541502), we get a palindrome (7592957).

The spelling of 2051455 in words is "two million, fifty-one thousand, four hundred fifty-five".