55668451 has 4 divisors (see below), whose sum is σ = 55683432. Its totient is φ = 55653472.

The previous prime is 55668427. The next prime is 55668469. The reversal of 55668451 is 15486655.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55668451 - 2⁵ = 55668419 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55668551) 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, 2760 + ... + 10906.

It is an arithmetic number, because the mean of its divisors is an integer number (13920858).

Almost surely, 2^55668451 is an apocalyptic number.

55668451 is a deficient number, since it is larger than the sum of its proper divisors (14981).

55668451 is an equidigital number, since it uses as much as digits as its factorization.

55668451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14980.

The product of its digits is 144000, while the sum is 40.

The square root of 55668451 is about 7461.1293381096. The cubic root of 55668451 is about 381.8297053503.

The spelling of 55668451 in words is "fifty-five million, six hundred sixty-eight thousand, four hundred fifty-one".