52219861 has 4 divisors (see below), whose sum is σ = 52955424. Its totient is φ = 51484300.

The previous prime is 52219859. The next prime is 52219883. The reversal of 52219861 is 16891225.

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 52219861 - 2¹ = 52219859 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 (52219891) 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, 367675 + ... + 367816.

It is an arithmetic number, because the mean of its divisors is an integer number (13238856).

Almost surely, 2^52219861 is an apocalyptic number.

It is an amenable number.

52219861 is a deficient number, since it is larger than the sum of its proper divisors (735563).

52219861 is an equidigital number, since it uses as much as digits as its factorization.

52219861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735562.

The product of its digits is 8640, while the sum is 34.

The square root of 52219861 is about 7226.3310884570. The cubic root of 52219861 is about 373.7764232278.

The spelling of 52219861 in words is "fifty-two million, two hundred nineteen thousand, eight hundred sixty-one".