52461581 has 4 divisors (see below), whose sum is σ = 52686972. Its totient is φ = 52236192.

The previous prime is 52461571. The next prime is 52461589. The reversal of 52461581 is 18516425.

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 14945956 + 37515625 = 3866^2 + 6125^2 .

It is a cyclic number.

It is not a de Polignac number, because 52461581 - 2¹⁰ = 52460557 is a prime.

It is a super-2 number, since 2×52461581² = 5504434962039122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52461589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112346 + ... + 112811.

It is an arithmetic number, because the mean of its divisors is an integer number (13171743).

Almost surely, 2^52461581 is an apocalyptic number.

It is an amenable number.

52461581 is a deficient number, since it is larger than the sum of its proper divisors (225391).

52461581 is a wasteful number, since it uses less digits than its factorization.

52461581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225390.

The product of its digits is 9600, while the sum is 32.

The square root of 52461581 is about 7243.0367250208. The cubic root of 52461581 is about 374.3522589802.

The spelling of 52461581 in words is "fifty-two million, four hundred sixty-one thousand, five hundred eighty-one".