5391485781 has 16 divisors (see below), whose sum is σ = 7864777728. Its totient is φ = 3258143600.

The previous prime is 5391485767. The next prime is 5391485797. The reversal of 5391485781 is 1875841935.

It is a cyclic number.

It is not a de Polignac number, because 5391485781 - 2¹⁰ = 5391484757 is a prime.

It is a super-2 number, since 2×5391485781² = 58136237853450359922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5391485711) 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, 223965 + ... + 246866.

It is an arithmetic number, because the mean of its divisors is an integer number (491548608).

Almost surely, 2^5391485781 is an apocalyptic number.

It is an amenable number.

5391485781 is a deficient number, since it is larger than the sum of its proper divisors (2473291947).

5391485781 is a wasteful number, since it uses less digits than its factorization.

5391485781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471192.

The product of its digits is 1209600, while the sum is 51.

The square root of 5391485781 is about 73426.7375075320. The cubic root of 5391485781 is about 1753.4880939173.

The spelling of 5391485781 in words is "five billion, three hundred ninety-one million, four hundred eighty-five thousand, seven hundred eighty-one".