52242561 has 24 divisors (see below), whose sum is σ = 86636160. Its totient is φ = 29716416.

The previous prime is 52242539. The next prime is 52242563. The reversal of 52242561 is 16524225.

It is not a de Polignac number, because 52242561 - 2⁹ = 52242049 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52242563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12900 + ... + 16458.

It is an arithmetic number, because the mean of its divisors is an integer number (3609840).

Almost surely, 2^52242561 is an apocalyptic number.

It is an amenable number.

52242561 is a deficient number, since it is larger than the sum of its proper divisors (34393599).

52242561 is a wasteful number, since it uses less digits than its factorization.

52242561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805 (or 3802 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 52242561 is about 7227.9015626944. The cubic root of 52242561 is about 373.8305756486.

Adding to 52242561 its reverse (16524225), we get a palindrome (68766786).

The spelling of 52242561 in words is "fifty-two million, two hundred forty-two thousand, five hundred sixty-one".