5172551 has 2 divisors, whose sum is σ = 5172552. Its totient is φ = 5172550.

The previous prime is 5172547. The next prime is 5172553. The reversal of 5172551 is 1552715.

It is a happy number.

5172551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5172551 - 2² = 5172547 is a prime.

Together with 5172553, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5172551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5172553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2586275 + 2586276.

It is an arithmetic number, because the mean of its divisors is an integer number (2586276).

Almost surely, 2^5172551 is an apocalyptic number.

5172551 is a deficient number, since it is larger than the sum of its proper divisors (1).

5172551 is an equidigital number, since it uses as much as digits as its factorization.

5172551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1750, while the sum is 26.

The square root of 5172551 is about 2274.3242952578. The cubic root of 5172551 is about 172.9424446851.

The spelling of 5172551 in words is "five million, one hundred seventy-two thousand, five hundred fifty-one".