55606919 has 8 divisors (see below), whose sum is σ = 56378400. Its totient is φ = 54840096.

The previous prime is 55606909. The next prime is 55606921. The reversal of 55606919 is 91960655.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55606919 is a prime.

It is a super-2 number, since 2×55606919² = 6184258881345122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55606909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27557 + ... + 29505.

It is an arithmetic number, because the mean of its divisors is an integer number (7047300).

Almost surely, 2^55606919 is an apocalyptic number.

55606919 is a deficient number, since it is larger than the sum of its proper divisors (771481).

55606919 is a wasteful number, since it uses less digits than its factorization.

55606919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 55606919 is about 7457.0046935750. The cubic root of 55606919 is about 381.6889708960.

The spelling of 55606919 in words is "fifty-five million, six hundred six thousand, nine hundred nineteen".