5231393578 has 16 divisors (see below), whose sum is σ = 8595191880. Its totient is φ = 2376941056.

The previous prime is 5231393543. The next prime is 5231393581. The reversal of 5231393578 is 8753931325.

It can be written as a sum of positive squares in 4 ways, for example, as 5121835489 + 109558089 = 71567^2 + 10467^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2651851 + ... + 2653822.

Almost surely, 2^5231393578 is an apocalyptic number.

5231393578 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

5231393578 is a deficient number, since it is larger than the sum of its proper divisors (3363798302).

5231393578 is a wasteful number, since it uses less digits than its factorization.

5231393578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305721.

The product of its digits is 680400, while the sum is 46.

The square root of 5231393578 is about 72328.3732569730. The cubic root of 5231393578 is about 1735.9576724250.

The spelling of 5231393578 in words is "five billion, two hundred thirty-one million, three hundred ninety-three thousand, five hundred seventy-eight".