55683619 has 4 divisors (see below), whose sum is σ = 58959144. Its totient is φ = 52408096.

The previous prime is 55683601. The next prime is 55683629. The reversal of 55683619 is 91638655.

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

It is a cyclic number.

It is not a de Polignac number, because 55683619 - 2⁹ = 55683107 is a prime.

It is a super-2 number, since 2×55683619² = 6201330849874322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55683629) 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, 1637737 + ... + 1637770.

It is an arithmetic number, because the mean of its divisors is an integer number (14739786).

Almost surely, 2^55683619 is an apocalyptic number.

55683619 is a deficient number, since it is larger than the sum of its proper divisors (3275525).

55683619 is a wasteful number, since it uses less digits than its factorization.

55683619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275524.

The product of its digits is 194400, while the sum is 43.

The square root of 55683619 is about 7462.1457369848. The cubic root of 55683619 is about 381.8643812870.

The spelling of 55683619 in words is "fifty-five million, six hundred eighty-three thousand, six hundred nineteen".