264524621 has 2 divisors, whose sum is σ = 264524622. Its totient is φ = 264524620.

The previous prime is 264524599. The next prime is 264524639. The reversal of 264524621 is 126425462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201242596 + 63282025 = 14186^2 + 7955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264524621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264524321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132262310 + 132262311.

It is an arithmetic number, because the mean of its divisors is an integer number (132262311).

Almost surely, 2^264524621 is an apocalyptic number.

It is an amenable number.

264524621 is a deficient number, since it is larger than the sum of its proper divisors (1).

264524621 is an equidigital number, since it uses as much as digits as its factorization.

264524621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 32.

The square root of 264524621 is about 16264.2128921138. The cubic root of 264524621 is about 641.9315191429.

The spelling of 264524621 in words is "two hundred sixty-four million, five hundred twenty-four thousand, six hundred twenty-one".