5391621432 has 96 divisors (see below), whose sum is σ = 15207454080. Its totient is φ = 1723760640.

The previous prime is 5391621419. The next prime is 5391621461. The reversal of 5391621432 is 2341261935.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241528 + ... + 262904.

It is an arithmetic number, because the mean of its divisors is an integer number (158410980).

Almost surely, 2^5391621432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5391621432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7603727040).

5391621432 is an abundant number, since it is smaller than the sum of its proper divisors (9815832648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5391621432 is a wasteful number, since it uses less digits than its factorization.

5391621432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21533 (or 21526 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 5391621432 is about 73427.6612183719. The cubic root of 5391621432 is about 1753.5027998462.

The spelling of 5391621432 in words is "five billion, three hundred ninety-one million, six hundred twenty-one thousand, four hundred thirty-two".