5431054721 has 4 divisors (see below), whose sum is σ = 5618332500. Its totient is φ = 5243776944.

The previous prime is 5431054711. The next prime is 5431054729. The reversal of 5431054721 is 1274501345.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2489511025 + 2941543696 = 49895^2 + 54236^2 .

It is a cyclic number.

It is not a de Polignac number, because 5431054721 - 2²⁶ = 5363945857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5431054729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93638846 + ... + 93638903.

It is an arithmetic number, because the mean of its divisors is an integer number (1404583125).

Almost surely, 2^5431054721 is an apocalyptic number.

It is an amenable number.

5431054721 is a deficient number, since it is larger than the sum of its proper divisors (187277779).

5431054721 is a wasteful number, since it uses less digits than its factorization.

5431054721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187277778.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 5431054721 is about 73695.6899757374. The cubic root of 5431054721 is about 1757.7673481332.

The spelling of 5431054721 in words is "five billion, four hundred thirty-one million, fifty-four thousand, seven hundred twenty-one".