5431021555 has 8 divisors (see below), whose sum is σ = 6533982000. Its totient is φ = 4333646496.

The previous prime is 5431021553. The next prime is 5431021559. The reversal of 5431021555 is 5551201345.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5431021555 - 2¹ = 5431021553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5431021553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1394205 + ... + 1398094.

It is an arithmetic number, because the mean of its divisors is an integer number (816747750).

Almost surely, 2^5431021555 is an apocalyptic number.

5431021555 is a deficient number, since it is larger than the sum of its proper divisors (1102960445).

5431021555 is a wasteful number, since it uses less digits than its factorization.

5431021555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792693.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 5431021555 is about 73695.4649554503. The cubic root of 5431021555 is about 1757.7637700540.

The spelling of 5431021555 in words is "five billion, four hundred thirty-one million, twenty-one thousand, five hundred fifty-five".