52146661 has 4 divisors (see below), whose sum is σ = 59596192. Its totient is φ = 44697132.

The previous prime is 52146649. The next prime is 52146671. The reversal of 52146661 is 16664125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52146661 - 2²³ = 43758053 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 (52146631) 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, 3724755 + ... + 3724768.

It is an arithmetic number, because the mean of its divisors is an integer number (14899048).

Almost surely, 2^52146661 is an apocalyptic number.

It is an amenable number.

52146661 is a deficient number, since it is larger than the sum of its proper divisors (7449531).

52146661 is an equidigital number, since it uses as much as digits as its factorization.

52146661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7449530.

The product of its digits is 8640, while the sum is 31.

The square root of 52146661 is about 7221.2645014568. The cubic root of 52146661 is about 373.6016925926.

The spelling of 52146661 in words is "fifty-two million, one hundred forty-six thousand, six hundred sixty-one".