56005451 has 4 divisors (see below), whose sum is σ = 56022504. Its totient is φ = 55988400.

The previous prime is 56005441. The next prime is 56005459. The reversal of 56005451 is 15450065.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15450065 = 5 ⋅3090013.

It is a cyclic number.

It is not a de Polignac number, because 56005451 - 2¹⁰ = 56004427 is a prime.

It is a super-2 number, since 2×56005451² = 6273221083426802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56005451.

It is not an unprimeable number, because it can be changed into a prime (56005459) 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, 1865 + ... + 10746.

It is an arithmetic number, because the mean of its divisors is an integer number (14005626).

Almost surely, 2^56005451 is an apocalyptic number.

56005451 is a deficient number, since it is larger than the sum of its proper divisors (17053).

56005451 is a wasteful number, since it uses less digits than its factorization.

56005451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17052.

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

The square root of 56005451 is about 7483.6789749427. The cubic root of 56005451 is about 382.5986497087.

The spelling of 56005451 in words is "fifty-six million, five thousand, four hundred fifty-one".