5305645 has 4 divisors (see below), whose sum is σ = 6366780. Its totient is φ = 4244512.

The previous prime is 5305627. The next prime is 5305667. The reversal of 5305645 is 5465035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5465035 = 5 ⋅1093007.

It can be written as a sum of positive squares in 2 ways, for example, as 3896676 + 1408969 = 1974^2 + 1187^2 .

It is a cyclic number.

It is not a de Polignac number, because 5305645 - 2⁵ = 5305613 is a prime.

It is a super-3 number, since 3×5305645³ (a number of 21 digits) contains 333 as substring.

5305645 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530560 + ... + 530569.

It is an arithmetic number, because the mean of its divisors is an integer number (1591695).

Almost surely, 2^5305645 is an apocalyptic number.

It is an amenable number.

5305645 is a deficient number, since it is larger than the sum of its proper divisors (1061135).

5305645 is a wasteful number, since it uses less digits than its factorization.

5305645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061134.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 5305645 is about 2303.3985760176. The cubic root of 5305645 is about 174.4132183715.

The spelling of 5305645 in words is "five million, three hundred five thousand, six hundred forty-five".