612521 has 16 divisors (see below), whose sum is σ = 774144. Its totient is φ = 471744.

The previous prime is 612511. The next prime is 612553. The reversal of 612521 is 125216.

It is not a de Polignac number, because 612521 - 2¹⁰ = 611497 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 612521.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 612521.

It is not an unprimeable number, because it can be changed into a prime (612511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4760 + ... + 4886.

It is an arithmetic number, because the mean of its divisors is an integer number (48384).

2⁶¹²⁵²¹ is an apocalyptic number.

It is an amenable number.

612521 is a deficient number, since it is larger than the sum of its proper divisors (161623).

612521 is a wasteful number, since it uses less digits than its factorization.

612521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200.

The product of its digits is 120, while the sum is 17.

The square root of 612521 is about 782.6372084178. The cubic root of 612521 is about 84.9259331720.

Adding to 612521 its reverse (125216), we get a palindrome (737737).

The spelling of 612521 in words is "six hundred twelve thousand, five hundred twenty-one".