55919489 has 8 divisors (see below), whose sum is σ = 58935840. Its totient is φ = 52910496.

The previous prime is 55919483. The next prime is 55919491. The reversal of 55919489 is 98491955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55919489 - 2²⁰ = 54870913 is a prime.

It is a super-2 number, since 2×55919489² = 6253978500042242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55919483) 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 7 ways as a sum of consecutive naturals, for example, 21434 + ... + 23900.

It is an arithmetic number, because the mean of its divisors is an integer number (7366980).

Almost surely, 2^55919489 is an apocalyptic number.

It is an amenable number.

55919489 is a deficient number, since it is larger than the sum of its proper divisors (3016351).

55919489 is a wasteful number, since it uses less digits than its factorization.

55919489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679.

The product of its digits is 583200, while the sum is 50.

The square root of 55919489 is about 7477.9334712205. The cubic root of 55919489 is about 382.4028009962.

The spelling of 55919489 in words is "fifty-five million, nine hundred nineteen thousand, four hundred eighty-nine".