55761669 has 16 divisors (see below), whose sum is σ = 84532800. Its totient is φ = 36309168.

The previous prime is 55761661. The next prime is 55761679. The reversal of 55761669 is 96616755.

55761669 is a `hidden beast` number, since 5 + 576 + 16 + 69 = 666.

55761669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55761669 - 2³ = 55761661 is a prime.

It is a super-2 number, since 2×55761669² = 6218727459331122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55761661) 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 15 ways as a sum of consecutive naturals, for example, 22854 + ... + 25175.

It is an arithmetic number, because the mean of its divisors is an integer number (5283300).

Almost surely, 2^55761669 is an apocalyptic number.

It is an amenable number.

55761669 is a deficient number, since it is larger than the sum of its proper divisors (28771131).

55761669 is a wasteful number, since it uses less digits than its factorization.

55761669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48081 (or 48075 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 55761669 is about 7467.3736346858. The cubic root of 55761669 is about 382.0427138078.

It can be divided in two parts, 557 and 61669, that added together give a palindrome (62226).

The spelling of 55761669 in words is "fifty-five million, seven hundred sixty-one thousand, six hundred sixty-nine".