55926661 has 4 divisors (see below), whose sum is σ = 63916192. Its totient is φ = 47937132.

The previous prime is 55926659. The next prime is 55926677. The reversal of 55926661 is 16662955.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16662955 = 5 ⋅3332591.

It is a cyclic number.

It is not a de Polignac number, because 55926661 - 2¹ = 55926659 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 (55926641) 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, 3994755 + ... + 3994768.

It is an arithmetic number, because the mean of its divisors is an integer number (15979048).

Almost surely, 2^55926661 is an apocalyptic number.

It is an amenable number.

55926661 is a deficient number, since it is larger than the sum of its proper divisors (7989531).

55926661 is an equidigital number, since it uses as much as digits as its factorization.

55926661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7989530.

The product of its digits is 97200, while the sum is 40.

The square root of 55926661 is about 7478.4130000957. The cubic root of 55926661 is about 382.4191487591.

The spelling of 55926661 in words is "fifty-five million, nine hundred twenty-six thousand, six hundred sixty-one".