55089766 has 4 divisors (see below), whose sum is σ = 82634652. Its totient is φ = 27544882.

The previous prime is 55089757. The next prime is 55089787. The reversal of 55089766 is 66798055.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13772440 + ... + 13772443.

It is an arithmetic number, because the mean of its divisors is an integer number (20658663).

Almost surely, 2^55089766 is an apocalyptic number.

55089766 is a deficient number, since it is larger than the sum of its proper divisors (27544886).

55089766 is a wasteful number, since it uses less digits than its factorization.

55089766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27544885.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 55089766 is about 7422.2480422039. The cubic root of 55089766 is about 380.5020280628.

It can be divided in two parts, 55089 and 766, that added together give a palindrome (55855).

The spelling of 55089766 in words is "fifty-five million, eighty-nine thousand, seven hundred sixty-six".