5424221251 has 4 divisors (see below), whose sum is σ = 5709706600. Its totient is φ = 5138735904.

The previous prime is 5424221233. The next prime is 5424221269. The reversal of 5424221251 is 1521224245.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (5424221233) and next prime (5424221269).

It is a cyclic number.

It is not a de Polignac number, because 5424221251 - 2¹³ = 5424213059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5424221281) 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, 142742646 + ... + 142742683.

It is an arithmetic number, because the mean of its divisors is an integer number (1427426650).

Almost surely, 2^5424221251 is an apocalyptic number.

5424221251 is a deficient number, since it is larger than the sum of its proper divisors (285485349).

5424221251 is a wasteful number, since it uses less digits than its factorization.

5424221251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285485348.

The product of its digits is 6400, while the sum is 28.

The square root of 5424221251 is about 73649.3126308725. The cubic root of 5424221251 is about 1757.0298184786.

Adding to 5424221251 its reverse (1521224245), we get a palindrome (6945445496).

The spelling of 5424221251 in words is "five billion, four hundred twenty-four million, two hundred twenty-one thousand, two hundred fifty-one".