2265521 has 2 divisors, whose sum is σ = 2265522. Its totient is φ = 2265520.

The previous prime is 2265517. The next prime is 2265551. The reversal of 2265521 is 1255622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2217121 + 48400 = 1489^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2265521 - 2² = 2265517 is a prime.

It is equal to p₁₆₇₁₅₃ and since 2265521 and 167153 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2265551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1132760 + 1132761.

It is an arithmetic number, because the mean of its divisors is an integer number (1132761).

2^2265521 is an apocalyptic number.

It is an amenable number.

2265521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2265521 is an equidigital number, since it uses as much as digits as its factorization.

2265521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 2265521 is about 1505.1647750330. The cubic root of 2265521 is about 131.3376871332.

The spelling of 2265521 in words is "two million, two hundred sixty-five thousand, five hundred twenty-one".