524742161 has 4 divisors (see below), whose sum is σ = 530151972. Its totient is φ = 519332352.

The previous prime is 524742157. The next prime is 524742187. The reversal of 524742161 is 161247425.

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 115691536 + 409050625 = 10756^2 + 20225^2 .

It is a cyclic number.

It is not a de Polignac number, because 524742161 - 2² = 524742157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (524742061) 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, 2704760 + ... + 2704953.

It is an arithmetic number, because the mean of its divisors is an integer number (132537993).

Almost surely, 2^524742161 is an apocalyptic number.

It is an amenable number.

524742161 is a deficient number, since it is larger than the sum of its proper divisors (5409811).

524742161 is an equidigital number, since it uses as much as digits as its factorization.

524742161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5409810.

The product of its digits is 13440, while the sum is 32.

The square root of 524742161 is about 22907.2512755241. The cubic root of 524742161 is about 806.5822363614.

Adding to 524742161 its reverse (161247425), we get a palindrome (685989586).

The spelling of 524742161 in words is "five hundred twenty-four million, seven hundred forty-two thousand, one hundred sixty-one".