5645531 has 4 divisors (see below), whose sum is σ = 5690112. Its totient is φ = 5600952.

The previous prime is 5645501. The next prime is 5645539. The reversal of 5645531 is 1355465.

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

It is a cyclic number.

It is not a de Polignac number, because 5645531 - 2¹⁴ = 5629147 is a prime.

It is a super-2 number, since 2×5645531² = 63744040543922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5⁷ + 6⁴ + 4⁸ + 5⁹ + 5⁹ + 3¹³ + 1 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5645494 and 5645503.

It is not an unprimeable number, because it can be changed into a prime (5645539) 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, 22100 + ... + 22353.

It is an arithmetic number, because the mean of its divisors is an integer number (1422528).

Almost surely, 2^5645531 is an apocalyptic number.

5645531 is a deficient number, since it is larger than the sum of its proper divisors (44581).

5645531 is a wasteful number, since it uses less digits than its factorization.

5645531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44580.

The product of its digits is 9000, while the sum is 29.

The square root of 5645531 is about 2376.0326176212. The cubic root of 5645531 is about 178.0607775452.

The spelling of 5645531 in words is "five million, six hundred forty-five thousand, five hundred thirty-one".