55589697 has 12 divisors (see below), whose sum is σ = 80361060. Its totient is φ = 37029888.

The previous prime is 55589671. The next prime is 55589701. The reversal of 55589697 is 79698555.

It is a happy number.

55589697 is a `hidden beast` number, since 55 + 589 + 6 + 9 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11553201 + 44036496 = 3399^2 + 6636^2 .

It is not a de Polignac number, because 55589697 - 2¹⁸ = 55327553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55589627) 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 11 ways as a sum of consecutive naturals, for example, 19329 + ... + 22017.

It is an arithmetic number, because the mean of its divisors is an integer number (6696755).

Almost surely, 2^55589697 is an apocalyptic number.

It is an amenable number.

55589697 is a deficient number, since it is larger than the sum of its proper divisors (24771363).

55589697 is a wasteful number, since it uses less digits than its factorization.

55589697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992 (or 4989 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 54.

The square root of 55589697 is about 7455.8498509560. The cubic root of 55589697 is about 381.6495625735.

The spelling of 55589697 in words is "fifty-five million, five hundred eighty-nine thousand, six hundred ninety-seven".