525993197 has 4 divisors (see below), whose sum is σ = 526460220. Its totient is φ = 525526176.

The previous prime is 525993137. The next prime is 525993217. The reversal of 525993197 is 791399525.

It is a happy number.

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 85581001 + 440412196 = 9251^2 + 20986^2 .

It is a cyclic number.

It is not a de Polignac number, because 525993197 - 2²⁴ = 509215981 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 (525993137) 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, 231818 + ... + 234075.

It is an arithmetic number, because the mean of its divisors is an integer number (131615055).

Almost surely, 2^525993197 is an apocalyptic number.

It is an amenable number.

525993197 is a deficient number, since it is larger than the sum of its proper divisors (467023).

525993197 is a wasteful number, since it uses less digits than its factorization.

525993197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467022.

The product of its digits is 765450, while the sum is 50.

The square root of 525993197 is about 22934.5415694319. The cubic root of 525993197 is about 807.2227176291. Note that the first 3 decimals are identical.

The spelling of 525993197 in words is "five hundred twenty-five million, nine hundred ninety-three thousand, one hundred ninety-seven".