52212645 has 48 divisors (see below), whose sum is σ = 96100992. Its totient is φ = 26167680.

The previous prime is 52212613. The next prime is 52212647. The reversal of 52212645 is 54621225.

52212645 is a `hidden beast` number, since 5 + 2 + 2 + 12 + 645 = 666.

It is not a de Polignac number, because 52212645 - 2⁵ = 52212613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52212647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62722 + ... + 63548.

It is an arithmetic number, because the mean of its divisors is an integer number (2002104).

Almost surely, 2^52212645 is an apocalyptic number.

It is an amenable number.

52212645 is a deficient number, since it is larger than the sum of its proper divisors (43888347).

52212645 is a wasteful number, since it uses less digits than its factorization.

52212645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922 (or 919 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 52212645 is about 7225.8317860299. The cubic root of 52212645 is about 373.7592056733.

The spelling of 52212645 in words is "fifty-two million, two hundred twelve thousand, six hundred forty-five".