52478187 has 8 divisors (see below), whose sum is σ = 70058640. Its totient is φ = 34941600.

The previous prime is 52478177. The next prime is 52478213. The reversal of 52478187 is 78187425.

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

It is not a de Polignac number, because 52478187 - 2⁷ = 52478059 is a prime.

It is a super-2 number, since 2×52478187² = 5507920221613938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52478137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8064 + ... + 13037.

It is an arithmetic number, because the mean of its divisors is an integer number (8757330).

Almost surely, 2^52478187 is an apocalyptic number.

52478187 is a deficient number, since it is larger than the sum of its proper divisors (17580453).

52478187 is a wasteful number, since it uses less digits than its factorization.

52478187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21933.

The product of its digits is 125440, while the sum is 42.

The square root of 52478187 is about 7244.1829767062. The cubic root of 52478187 is about 374.3917535189.

The spelling of 52478187 in words is "fifty-two million, four hundred seventy-eight thousand, one hundred eighty-seven".