5212645 has 4 divisors (see below), whose sum is σ = 6255180. Its totient is φ = 4170112.

The previous prime is 5212637. The next prime is 5212673. The reversal of 5212645 is 5462125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 641601 + 4571044 = 801^2 + 2138^2 .

It is a cyclic number.

It is not a de Polignac number, because 5212645 - 2³ = 5212637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521260 + ... + 521269.

It is an arithmetic number, because the mean of its divisors is an integer number (1563795).

Almost surely, 2^5212645 is an apocalyptic number.

It is an amenable number.

5212645 is a deficient number, since it is larger than the sum of its proper divisors (1042535).

5212645 is a wasteful number, since it uses less digits than its factorization.

5212645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042534.

The product of its digits is 2400, while the sum is 25.

The square root of 5212645 is about 2283.1217663541. The cubic root of 5212645 is about 173.3881380776.

The spelling of 5212645 in words is "five million, two hundred twelve thousand, six hundred forty-five".