52105212 has 36 divisors (see below), whose sum is σ = 137439120. Its totient is φ = 16612992.

The previous prime is 52105177. The next prime is 52105231. The reversal of 52105212 is 21250125.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30637 + ... + 32292.

Almost surely, 2^52105212 is an apocalyptic number.

It is an amenable number.

52105212 is an abundant number, since it is smaller than the sum of its proper divisors (85333908).

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

52105212 is a wasteful number, since it uses less digits than its factorization.

52105212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62962 (or 62957 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 52105212 is about 7218.3940042090. The cubic root of 52105212 is about 373.5026800451.

Adding to 52105212 its reverse (21250125), we get a palindrome (73355337).

The spelling of 52105212 in words is "fifty-two million, one hundred five thousand, two hundred twelve".