5265561 has 8 divisors (see below), whose sum is σ = 8023744. Its totient is φ = 3008880.

The previous prime is 5265539. The next prime is 5265571. The reversal of 5265561 is 1655625.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5265561 - 2¹⁰ = 5264537 is a prime.

It is a super-2 number, since 2×5265561² = 55452265289442, which contains 22 as substring.

It is a Duffinian number.

5265561 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5265571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125350 + ... + 125391.

It is an arithmetic number, because the mean of its divisors is an integer number (1002968).

Almost surely, 2^5265561 is an apocalyptic number.

It is an amenable number.

5265561 is a deficient number, since it is larger than the sum of its proper divisors (2758183).

5265561 is a wasteful number, since it uses less digits than its factorization.

5265561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250751.

The product of its digits is 9000, while the sum is 30.

The square root of 5265561 is about 2294.6810235848. The cubic root of 5265561 is about 173.9728785843.

It can be divided in two parts, 5265 and 561, that multiplied together give a triangular number (2953665 = T₂₄₃₀).

The spelling of 5265561 in words is "five million, two hundred sixty-five thousand, five hundred sixty-one".