5105645 has 4 divisors (see below), whose sum is σ = 6126780. Its totient is φ = 4084512.

The previous prime is 5105641. The next prime is 5105671. The reversal of 5105645 is 5465015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 687241 + 4418404 = 829^2 + 2102^2 .

It is a cyclic number.

It is not a de Polignac number, because 5105645 - 2² = 5105641 is a prime.

It is a super-3 number, since 3×5105645³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5105641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510560 + ... + 510569.

It is an arithmetic number, because the mean of its divisors is an integer number (1531695).

Almost surely, 2^5105645 is an apocalyptic number.

It is an amenable number.

5105645 is a deficient number, since it is larger than the sum of its proper divisors (1021135).

5105645 is a wasteful number, since it uses less digits than its factorization.

5105645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021134.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 5105645 is about 2259.5674364798. The cubic root of 5105645 is about 172.1935467731.

The spelling of 5105645 in words is "five million, one hundred five thousand, six hundred forty-five".