52420666 has 8 divisors (see below), whose sum is σ = 79804800. Its totient is φ = 25819068.

The previous prime is 52420663. The next prime is 52420699. The reversal of 52420666 is 66602425.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×52420666³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (52420663) 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, 195466 + ... + 195733.

It is an arithmetic number, because the mean of its divisors is an integer number (9975600).

Almost surely, 2^52420666 is an apocalyptic number.

52420666 is a deficient number, since it is larger than the sum of its proper divisors (27384134).

52420666 is a wasteful number, since it uses less digits than its factorization.

52420666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391268.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 52420666 is about 7240.2117372353. The cubic root of 52420666 is about 374.2549140538.

The spelling of 52420666 in words is "fifty-two million, four hundred twenty thousand, six hundred sixty-six".