4971881573 has 4 divisors (see below), whose sum is σ = 4987566060. Its totient is φ = 4956197088.

The previous prime is 4971881533. The next prime is 4971881627. The reversal of 4971881573 is 3751881794.

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 469068964 + 4502812609 = 21658^2 + 67103^2 .

It is a cyclic number.

It is not a de Polignac number, because 4971881573 - 2²⁶ = 4904772709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4971881533) 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, 7841768 + ... + 7842401.

It is an arithmetic number, because the mean of its divisors is an integer number (1246891515).

Almost surely, 2^4971881573 is an apocalyptic number.

It is an amenable number.

4971881573 is a deficient number, since it is larger than the sum of its proper divisors (15684487).

4971881573 is a wasteful number, since it uses less digits than its factorization.

4971881573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15684486.

The product of its digits is 1693440, while the sum is 53.

The square root of 4971881573 is about 70511.5704902394. The cubic root of 4971881573 is about 1706.7644634197.

The spelling of 4971881573 in words is "four billion, nine hundred seventy-one million, eight hundred eighty-one thousand, five hundred seventy-three".