5451566 has 4 divisors (see below), whose sum is σ = 8177352. Its totient is φ = 2725782.

The previous prime is 5451559. The next prime is 5451587. The reversal of 5451566 is 6651545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6651545 = 5 ⋅1330309.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1362890 + ... + 1362893.

It is an arithmetic number, because the mean of its divisors is an integer number (2044338).

Almost surely, 2^5451566 is an apocalyptic number.

5451566 is a deficient number, since it is larger than the sum of its proper divisors (2725786).

5451566 is a wasteful number, since it uses less digits than its factorization.

5451566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725785.

The product of its digits is 18000, while the sum is 32.

The square root of 5451566 is about 2334.8588822453. The cubic root of 5451566 is about 175.9977401569.

The spelling of 5451566 in words is "five million, four hundred fifty-one thousand, five hundred sixty-six".