2455421 has 8 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 2372128.

The previous prime is 2455391. The next prime is 2455423. The reversal of 2455421 is 1245542.

It is a happy number.

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 2455421 - 2¹⁴ = 2439037 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2455423) 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, 3890 + ... + 4476.

It is an arithmetic number, because the mean of its divisors is an integer number (317520).

2^2455421 is an apocalyptic number.

It is an amenable number.

2455421 is a deficient number, since it is larger than the sum of its proper divisors (84739).

2455421 is an equidigital number, since it uses as much as digits as its factorization.

2455421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723.

The product of its digits is 1600, while the sum is 23.

The square root of 2455421 is about 1566.9783023386. The cubic root of 2455421 is about 134.9093309793.

The spelling of 2455421 in words is "two million, four hundred fifty-five thousand, four hundred twenty-one".