55789609 has 4 divisors (see below), whose sum is σ = 55906560. Its totient is φ = 55672660.

The previous prime is 55789607. The next prime is 55789621. The reversal of 55789609 is 90698755.

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.

It is a cyclic number.

It is not a de Polignac number, because 55789609 - 2¹ = 55789607 is a prime.

It is a super-2 number, since 2×55789609² = 6224960944745762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55789607) 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, 57757 + ... + 58714.

It is an arithmetic number, because the mean of its divisors is an integer number (13976640).

Almost surely, 2^55789609 is an apocalyptic number.

It is an amenable number.

55789609 is a deficient number, since it is larger than the sum of its proper divisors (116951).

55789609 is a wasteful number, since it uses less digits than its factorization.

55789609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116950.

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 55789609 is about 7469.2442054066. The cubic root of 55789609 is about 382.1065120602.

The spelling of 55789609 in words is "fifty-five million, seven hundred eighty-nine thousand, six hundred nine".