2421554 has 4 divisors (see below), whose sum is σ = 3632334. Its totient is φ = 1210776.

The previous prime is 2421553. The next prime is 2421577. The reversal of 2421554 is 4551242.

It is a happy number.

2421554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 1620529 + 801025 = 1273^2 + 895^2 .

It is not an unprimeable number, because it can be changed into a prime (2421553) 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, 605387 + ... + 605390.

2^2421554 is an apocalyptic number.

2421554 is a deficient number, since it is larger than the sum of its proper divisors (1210780).

2421554 is a wasteful number, since it uses less digits than its factorization.

2421554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210779.

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

The square root of 2421554 is about 1556.1343129692. The cubic root of 2421554 is about 134.2862004984.

Adding to 2421554 its reverse (4551242), we get a palindrome (6972796).

The spelling of 2421554 in words is "two million, four hundred twenty-one thousand, five hundred fifty-four".