52240561 has 8 divisors (see below), whose sum is σ = 52828160. Its totient is φ = 51655968.

The previous prime is 52240543. The next prime is 52240577. The reversal of 52240561 is 16504225.

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 52240561 - 2¹⁷ = 52109489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52240511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55285 + ... + 56221.

It is an arithmetic number, because the mean of its divisors is an integer number (6603520).

Almost surely, 2^52240561 is an apocalyptic number.

It is an amenable number.

52240561 is a deficient number, since it is larger than the sum of its proper divisors (587599).

52240561 is a wasteful number, since it uses less digits than its factorization.

52240561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 52240561 is about 7227.7632086282. The cubic root of 52240561 is about 373.8258051405.

Adding to 52240561 its reverse (16504225), we get a palindrome (68744786).

The spelling of 52240561 in words is "fifty-two million, two hundred forty thousand, five hundred sixty-one".