52211978 has 32 divisors (see below), whose sum is σ = 100590336. Its totient is φ = 19755648.

The previous prime is 52211963. The next prime is 52212023. The reversal of 52211978 is 87911225.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 2051 + ... + 10422.

It is an arithmetic number, because the mean of its divisors is an integer number (3143448).

Almost surely, 2^52211978 is an apocalyptic number.

52211978 is a deficient number, since it is larger than the sum of its proper divisors (48378358).

52211978 is a wasteful number, since it uses less digits than its factorization.

52211978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12518.

The product of its digits is 10080, while the sum is 35.

The square root of 52211978 is about 7225.7856320265. The cubic root of 52211978 is about 373.7576141147.

The spelling of 52211978 in words is "fifty-two million, two hundred eleven thousand, nine hundred seventy-eight".