525021173 has 2 divisors, whose sum is σ = 525021174. Its totient is φ = 525021172.

The previous prime is 525021131. The next prime is 525021187. The reversal of 525021173 is 371120525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487835569 + 37185604 = 22087^2 + 6098^2 .

It is a cyclic number.

It is not a de Polignac number, because 525021173 - 2¹⁶ = 524955637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525021193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262510586 + 262510587.

It is an arithmetic number, because the mean of its divisors is an integer number (262510587).

Almost surely, 2^525021173 is an apocalyptic number.

It is an amenable number.

525021173 is a deficient number, since it is larger than the sum of its proper divisors (1).

525021173 is an equidigital number, since it uses as much as digits as its factorization.

525021173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 525021173 is about 22913.3405028599. The cubic root of 525021173 is about 806.7251676680.

Adding to 525021173 its reverse (371120525), we get a palindrome (896141698).

The spelling of 525021173 in words is "five hundred twenty-five million, twenty-one thousand, one hundred seventy-three".