5421252747 has 4 divisors (see below), whose sum is σ = 7228337000. Its totient is φ = 3614168496.

The previous prime is 5421252719. The next prime is 5421252761. The reversal of 5421252747 is 7472521245.

It is a happy number.

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

It is not a de Polignac number, because 5421252747 - 2¹¹ = 5421250699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5421254747) 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, 903542122 + ... + 903542127.

It is an arithmetic number, because the mean of its divisors is an integer number (1807084250).

Almost surely, 2^5421252747 is an apocalyptic number.

5421252747 is a deficient number, since it is larger than the sum of its proper divisors (1807084253).

5421252747 is a wasteful number, since it uses less digits than its factorization.

5421252747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807084252.

The product of its digits is 156800, while the sum is 39.

The square root of 5421252747 is about 73629.1569081162. The cubic root of 5421252747 is about 1756.7092377867.

The spelling of 5421252747 in words is "five billion, four hundred twenty-one million, two hundred fifty-two thousand, seven hundred forty-seven".