2642455 has 4 divisors (see below), whose sum is σ = 3170952. Its totient is φ = 2113960.

The previous prime is 2642449. The next prime is 2642473. The reversal of 2642455 is 5542462.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2642455 - 2¹³ = 2634263 is a prime.

It is a Duffinian number.

2642455 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 3 ways as a sum of consecutive naturals, for example, 264241 + ... + 264250.

It is an arithmetic number, because the mean of its divisors is an integer number (792738).

2^2642455 is an apocalyptic number.

2642455 is a deficient number, since it is larger than the sum of its proper divisors (528497).

2642455 is an equidigital number, since it uses as much as digits as its factorization.

2642455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528496.

The product of its digits is 9600, while the sum is 28.

The square root of 2642455 is about 1625.5629794013. The cubic root of 2642455 is about 138.2512924613.

The spelling of 2642455 in words is "two million, six hundred forty-two thousand, four hundred fifty-five".