55302661 has 4 divisors (see below), whose sum is σ = 56209324. Its totient is φ = 54396000.

The previous prime is 55302659. The next prime is 55302703. The reversal of 55302661 is 16620355.

55302661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4622500 + 50680161 = 2150^2 + 7119^2 .

It is a cyclic number.

It is not a de Polignac number, because 55302661 - 2¹ = 55302659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55302061) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 453240 + ... + 453361.

It is an arithmetic number, because the mean of its divisors is an integer number (14052331).

Almost surely, 2^55302661 is an apocalyptic number.

It is an amenable number.

55302661 is a deficient number, since it is larger than the sum of its proper divisors (906663).

55302661 is an equidigital number, since it uses as much as digits as its factorization.

55302661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906662.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 55302661 is about 7436.5758921697. The cubic root of 55302661 is about 380.9915494253.

The spelling of 55302661 in words is "fifty-five million, three hundred two thousand, six hundred sixty-one".