525243641 has 8 divisors (see below), whose sum is σ = 570837960. Its totient is φ = 480390912.

The previous prime is 525243637. The next prime is 525243643. The reversal of 525243641 is 146342525.

It can be written as a sum of positive squares in 4 ways, for example, as 4080400 + 521163241 = 2020^2 + 22829^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 525243641 - 2² = 525243637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 525243598 and 525243607.

It is not an unprimeable number, because it can be changed into a prime (525243643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183920 + ... + 186753.

It is an arithmetic number, because the mean of its divisors is an integer number (71354745).

Almost surely, 2^525243641 is an apocalyptic number.

It is an amenable number.

525243641 is a deficient number, since it is larger than the sum of its proper divisors (45594319).

525243641 is a wasteful number, since it uses less digits than its factorization.

525243641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370795.

The product of its digits is 28800, while the sum is 32.

The square root of 525243641 is about 22918.1945405828. The cubic root of 525243641 is about 806.8390965282.

It can be divided in two parts, 52524 and 3641, that added together give a palindrome (56165).

The spelling of 525243641 in words is "five hundred twenty-five million, two hundred forty-three thousand, six hundred forty-one".