52278212 has 12 divisors (see below), whose sum is σ = 104556480. Its totient is φ = 22404936.

The previous prime is 52278133. The next prime is 52278217. The reversal of 52278212 is 21287225.

52278212 is an admirable number.

It is a super-2 number, since 2×52278212² = 5466022899833888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52278217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933512 + ... + 933567.

It is an arithmetic number, because the mean of its divisors is an integer number (8713040).

Almost surely, 2^52278212 is an apocalyptic number.

It is an amenable number.

52278212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

52278212 is a wasteful number, since it uses less digits than its factorization.

52278212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867090 (or 1867088 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 52278212 is about 7230.3673488973. The cubic root of 52278212 is about 373.9155919211.

The spelling of 52278212 in words is "fifty-two million, two hundred seventy-eight thousand, two hundred twelve".