52405219 has 4 divisors (see below), whose sum is σ = 52869096. Its totient is φ = 51941344.

The previous prime is 52405217. The next prime is 52405229. The reversal of 52405219 is 91250425.

52405219 = T₂ + T₃ + ... + T₆₇₉.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52405219 - 2¹ = 52405217 is a prime.

It is a super-2 number, since 2×52405219² = 5492613956875922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52405217) 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, 231769 + ... + 231994.

It is an arithmetic number, because the mean of its divisors is an integer number (13217274).

Almost surely, 2^52405219 is an apocalyptic number.

52405219 is a deficient number, since it is larger than the sum of its proper divisors (463877).

52405219 is a wasteful number, since it uses less digits than its factorization.

52405219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463876.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 52405219 is about 7239.1449080675. The cubic root of 52405219 is about 374.2181493956.

The spelling of 52405219 in words is "fifty-two million, four hundred five thousand, two hundred nineteen".