53212666 has 8 divisors (see below), whose sum is σ = 85958964. Its totient is φ = 24559680.

The previous prime is 53212657. The next prime is 53212667. The reversal of 53212666 is 66621235.

It can be written as a sum of positive squares in 2 ways, for example, as 45765225 + 7447441 = 6765^2 + 2729^2 .

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

It is not an unprimeable number, because it can be changed into a prime (53212667) 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, 1023295 + ... + 1023346.

Almost surely, 2^53212666 is an apocalyptic number.

53212666 is a deficient number, since it is larger than the sum of its proper divisors (32746298).

53212666 is a wasteful number, since it uses less digits than its factorization.

53212666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046656.

The product of its digits is 12960, while the sum is 31.

The square root of 53212666 is about 7294.7012276035. The cubic root of 53212666 is about 376.1303164179.

The spelling of 53212666 in words is "fifty-three million, two hundred twelve thousand, six hundred sixty-six".