5212661 has 4 divisors (see below), whose sum is σ = 5217324. Its totient is φ = 5208000.

The previous prime is 5212637. The next prime is 5212673. The reversal of 5212661 is 1662125.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 844561 + 4368100 = 919^2 + 2090^2 .

It is a cyclic number.

It is not a de Polignac number, because 5212661 - 2¹⁰ = 5211637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5212561) 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, 461 + ... + 3261.

It is an arithmetic number, because the mean of its divisors is an integer number (1304331).

Almost surely, 2^5212661 is an apocalyptic number.

It is an amenable number.

5212661 is a deficient number, since it is larger than the sum of its proper divisors (4663).

5212661 is a wasteful number, since it uses less digits than its factorization.

5212661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662.

The product of its digits is 720, while the sum is 23.

The square root of 5212661 is about 2283.1252703257. The cubic root of 5212661 is about 173.3883154800.

Adding to 5212661 its reverse (1662125), we get a palindrome (6874786).

The spelling of 5212661 in words is "five million, two hundred twelve thousand, six hundred sixty-one".