52413661 has 4 divisors (see below), whose sum is σ = 53402652. Its totient is φ = 51424672.

The previous prime is 52413649. The next prime is 52413671. The reversal of 52413661 is 16631425.

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 45091225 + 7322436 = 6715^2 + 2706^2 .

It is a cyclic number.

It is not a de Polignac number, because 52413661 - 2⁹ = 52413149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52413671) 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, 494416 + ... + 494521.

It is an arithmetic number, because the mean of its divisors is an integer number (13350663).

Almost surely, 2^52413661 is an apocalyptic number.

It is an amenable number.

52413661 is a deficient number, since it is larger than the sum of its proper divisors (988991).

52413661 is an equidigital number, since it uses as much as digits as its factorization.

52413661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988990.

The product of its digits is 4320, while the sum is 28.

The square root of 52413661 is about 7239.7279645025. The cubic root of 52413661 is about 374.2382426869.

The spelling of 52413661 in words is "fifty-two million, four hundred thirteen thousand, six hundred sixty-one".