5172120445 has 32 divisors (see below), whose sum is σ = 6529996800. Its totient is φ = 3927813120.

The previous prime is 5172120419. The next prime is 5172120451. The reversal of 5172120445 is 5440212715.

It is not a de Polignac number, because 5172120445 - 2¹¹ = 5172118397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2250537 + ... + 2252833.

It is an arithmetic number, because the mean of its divisors is an integer number (204062400).

Almost surely, 2^5172120445 is an apocalyptic number.

It is an amenable number.

5172120445 is a deficient number, since it is larger than the sum of its proper divisors (1357876355).

5172120445 is a wasteful number, since it uses less digits than its factorization.

5172120445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 5172120445 is about 71917.4557739635. The cubic root of 5172120445 is about 1729.3764606640.

The spelling of 5172120445 in words is "five billion, one hundred seventy-two million, one hundred twenty thousand, four hundred forty-five".