5445554421 has 16 divisors (see below), whose sum is σ = 7279544000. Its totient is φ = 3620982528.

The previous prime is 5445554399. The next prime is 5445554423. The reversal of 5445554421 is 1244555445.

It is not a de Polignac number, because 5445554421 - 2¹⁰ = 5445553397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5445554421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5445554423) 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, 3514755 + ... + 3516303.

It is an arithmetic number, because the mean of its divisors is an integer number (454971500).

Almost surely, 2^5445554421 is an apocalyptic number.

It is an amenable number.

5445554421 is a deficient number, since it is larger than the sum of its proper divisors (1833989579).

5445554421 is a wasteful number, since it uses less digits than its factorization.

5445554421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828.

The product of its digits is 320000, while the sum is 39.

The square root of 5445554421 is about 73793.9998983657. Note that the first 3 decimals coincide. The cubic root of 5445554421 is about 1759.3302398421.

The spelling of 5445554421 in words is "five billion, four hundred forty-five million, five hundred fifty-four thousand, four hundred twenty-one".