52439478 has 32 divisors (see below), whose sum is σ = 129083136. Its totient is φ = 13830048.

The previous prime is 52439467. The next prime is 52439479. The reversal of 52439478 is 87493425.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52439479) 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 15 ways as a sum of consecutive naturals, for example, 47476 + ... + 48567.

It is an arithmetic number, because the mean of its divisors is an integer number (4033848).

Almost surely, 2^52439478 is an apocalyptic number.

52439478 is an abundant number, since it is smaller than the sum of its proper divisors (76643658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52439478 is a wasteful number, since it uses less digits than its factorization.

52439478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96068.

The product of its digits is 241920, while the sum is 42.

The square root of 52439478 is about 7241.5107539794. The cubic root of 52439478 is about 374.2996778334.

The spelling of 52439478 in words is "fifty-two million, four hundred thirty-nine thousand, four hundred seventy-eight".