5321578981 has 16 divisors (see below), whose sum is σ = 5416761600. Its totient is φ = 5227479040.

The previous prime is 5321578979. The next prime is 5321579017. The reversal of 5321578981 is 1898751235.

It is a cyclic number.

It is not a de Polignac number, because 5321578981 - 2¹ = 5321578979 is a prime.

It is a super-2 number, since 2×5321578981² = 56638405702041996722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5321578081) 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, 11851845 + ... + 11852293.

It is an arithmetic number, because the mean of its divisors is an integer number (338547600).

Almost surely, 2^5321578981 is an apocalyptic number.

It is an amenable number.

5321578981 is a deficient number, since it is larger than the sum of its proper divisors (95182619).

5321578981 is a wasteful number, since it uses less digits than its factorization.

5321578981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244.

The product of its digits is 604800, while the sum is 49.

The square root of 5321578981 is about 72949.1533946762. The cubic root of 5321578981 is about 1745.8764387909.

The spelling of 5321578981 in words is "five billion, three hundred twenty-one million, five hundred seventy-eight thousand, nine hundred eighty-one".