5055661 has 4 divisors (see below), whose sum is σ = 5444572. Its totient is φ = 4666752.

The previous prime is 5055641. The next prime is 5055667. The reversal of 5055661 is 1665505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1665505 = 5 ⋅333101.

It can be written as a sum of positive squares in 2 ways, for example, as 1562500 + 3493161 = 1250^2 + 1869^2 .

It is a cyclic number.

It is not a de Polignac number, because 5055661 - 2⁵ = 5055629 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 (5055667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194436 + ... + 194461.

It is an arithmetic number, because the mean of its divisors is an integer number (1361143).

Almost surely, 2^5055661 is an apocalyptic number.

It is an amenable number.

5055661 is a deficient number, since it is larger than the sum of its proper divisors (388911).

5055661 is a wasteful number, since it uses less digits than its factorization.

5055661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388910.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 5055661 is about 2248.4797086031. The cubic root of 5055661 is about 171.6297810383.

The spelling of 5055661 in words is "five million, fifty-five thousand, six hundred sixty-one".