52457978 has 8 divisors (see below), whose sum is σ = 78893568. Its totient is φ = 26160124.

The previous prime is 52457953. The next prime is 52457981. The reversal of 52457978 is 87975425.

It is a happy number.

52457978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33476 + ... + 35007.

It is an arithmetic number, because the mean of its divisors is an integer number (9861696).

Almost surely, 2^52457978 is an apocalyptic number.

52457978 is a deficient number, since it is larger than the sum of its proper divisors (26435590).

52457978 is a wasteful number, since it uses less digits than its factorization.

52457978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68868.

The product of its digits is 705600, while the sum is 47.

The square root of 52457978 is about 7242.7879991064. The cubic root of 52457978 is about 374.3436887590.

It can be divided in two parts, 52457 and 978, that added together give a palindrome (53435).

The spelling of 52457978 in words is "fifty-two million, four hundred fifty-seven thousand, nine hundred seventy-eight".