612254521 has 2 divisors, whose sum is σ = 612254522. Its totient is φ = 612254520.

The previous prime is 612254497. The next prime is 612254543. The reversal of 612254521 is 125452216.

612254521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 583898896 + 28355625 = 24164^2 + 5325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612254521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612254521.

It is not a weakly prime, because it can be changed into another prime (612254221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306127260 + 306127261.

It is an arithmetic number, because the mean of its divisors is an integer number (306127261).

Almost surely, 2^612254521 is an apocalyptic number.

It is an amenable number.

612254521 is a deficient number, since it is larger than the sum of its proper divisors (1).

612254521 is an equidigital number, since it uses as much as digits as its factorization.

612254521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 28.

The square root of 612254521 is about 24743.7774197878. Note that the first 3 decimals coincide. The cubic root of 612254521 is about 849.1361562946.

The spelling of 612254521 in words is "six hundred twelve million, two hundred fifty-four thousand, five hundred twenty-one".