5643455 has 4 divisors (see below), whose sum is σ = 6772152. Its totient is φ = 4514760.

The previous prime is 5643427. The next prime is 5643479. The reversal of 5643455 is 5543465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5543465 = 5 ⋅1108693.

It is a de Polignac number, because none of the positive numbers 2^k-5643455 is a prime.

It is an Ulam number.

It is a Duffinian 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, 564341 + ... + 564350.

It is an arithmetic number, because the mean of its divisors is an integer number (1693038).

Almost surely, 2^5643455 is an apocalyptic number.

5643455 is a deficient number, since it is larger than the sum of its proper divisors (1128697).

5643455 is a wasteful number, since it uses less digits than its factorization.

5643455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128696.

The product of its digits is 36000, while the sum is 32.

The square root of 5643455 is about 2375.5957147629. The cubic root of 5643455 is about 178.0389490999.

The spelling of 5643455 in words is "five million, six hundred forty-three thousand, four hundred fifty-five".