5621565 has 8 divisors (see below), whose sum is σ = 8994528. Its totient is φ = 2998160.

The previous prime is 5621513. The next prime is 5621597. The reversal of 5621565 is 5651265.

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

It is not a de Polignac number, because 5621565 - 2⁷ = 5621437 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187371 + ... + 187400.

It is an arithmetic number, because the mean of its divisors is an integer number (1124316).

Almost surely, 2^5621565 is an apocalyptic number.

It is an amenable number.

5621565 is a deficient number, since it is larger than the sum of its proper divisors (3372963).

5621565 is a wasteful number, since it uses less digits than its factorization.

5621565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374779.

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

The square root of 5621565 is about 2370.9839729530. The cubic root of 5621565 is about 177.8084565834.

It can be divided in two parts, 56215 and 65, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 5621565 in words is "five million, six hundred twenty-one thousand, five hundred sixty-five".