4551055421 has 16 divisors (see below), whose sum is σ = 4986430848. Its totient is φ = 4119336000.

The previous prime is 4551055393. The next prime is 4551055501. The reversal of 4551055421 is 1245501554.

It is a cyclic number.

It is not a de Polignac number, because 4551055421 - 2¹⁰ = 4551054397 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 (4551055321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3497471 + ... + 3498771.

It is an arithmetic number, because the mean of its divisors is an integer number (311651928).

Almost surely, 2^4551055421 is an apocalyptic number.

It is an amenable number.

4551055421 is a deficient number, since it is larger than the sum of its proper divisors (435375427).

4551055421 is a wasteful number, since it uses less digits than its factorization.

4551055421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452.

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 4551055421 is about 67461.5106634887. The cubic root of 4551055421 is about 1657.1839103565.

Adding to 4551055421 its reverse (1245501554), we get a palindrome (5796556975).

The spelling of 4551055421 in words is "four billion, five hundred fifty-one million, fifty-five thousand, four hundred twenty-one".