52219904 has 104 divisors (see below), whose sum is σ = 121882080. Its totient is φ = 22118400.

The previous prime is 52219901. The next prime is 52219907. The reversal of 52219904 is 40991225.

It is an interprime number because it is at equal distance from previous prime (52219901) and next prime (52219907).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52219901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856034 + ... + 856094.

Almost surely, 2^52219904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52219904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60941040).

52219904 is an abundant number, since it is smaller than the sum of its proper divisors (69662176).

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

52219904 is a wasteful number, since it uses less digits than its factorization.

52219904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 52219904 is about 7226.3340636868. The cubic root of 52219904 is about 373.7765258221.

The spelling of 52219904 in words is "fifty-two million, two hundred nineteen thousand, nine hundred four".