4554421 has 4 divisors (see below), whose sum is σ = 4711500. Its totient is φ = 4397344.

The previous prime is 4554409. The next prime is 4554461. The reversal of 4554421 is 1244554.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1244554 = 2 ⋅622277.

It can be written as a sum of positive squares in 2 ways, for example, as 3651921 + 902500 = 1911^2 + 950^2 .

It is a cyclic number.

It is not a de Polignac number, because 4554421 - 2¹³ = 4546229 is a prime.

It is a Duffinian number.

4554421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4554401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78496 + ... + 78553.

It is an arithmetic number, because the mean of its divisors is an integer number (1177875).

Almost surely, 2^4554421 is an apocalyptic number.

It is an amenable number.

4554421 is a deficient number, since it is larger than the sum of its proper divisors (157079).

4554421 is a wasteful number, since it uses less digits than its factorization.

4554421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157078.

The product of its digits is 3200, while the sum is 25.

The square root of 4554421 is about 2134.1089475470. The cubic root of 4554421 is about 165.7592314456.

Adding to 4554421 its reverse (1244554), we get a palindrome (5798975).

The spelling of 4554421 in words is "four million, five hundred fifty-four thousand, four hundred twenty-one".