55607619 has 4 divisors (see below), whose sum is σ = 74143496. Its totient is φ = 37071744.

The previous prime is 55607609. The next prime is 55607621. The reversal of 55607619 is 91670655.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55607619 - 2¹² = 55603523 is a prime.

It is a super-2 number, since 2×55607619² = 6184414581698322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55607609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9267934 + ... + 9267939.

It is an arithmetic number, because the mean of its divisors is an integer number (18535874).

Almost surely, 2^55607619 is an apocalyptic number.

55607619 is a deficient number, since it is larger than the sum of its proper divisors (18535877).

55607619 is a wasteful number, since it uses less digits than its factorization.

55607619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18535876.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 55607619 is about 7457.0516291628. The cubic root of 55607619 is about 381.6905725022.

The spelling of 55607619 in words is "fifty-five million, six hundred seven thousand, six hundred nineteen".