55705819 has 8 divisors (see below), whose sum is σ = 60836832. Its totient is φ = 50695680.

The previous prime is 55705817. The next prime is 55705847. The reversal of 55705819 is 91850755.

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 55705819 - 2¹ = 55705817 is a prime.

It is a super-2 number, since 2×55705819² = 6206276540921522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55705813) 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, 29254 + ... + 31099.

It is an arithmetic number, because the mean of its divisors is an integer number (7604604).

Almost surely, 2^55705819 is an apocalyptic number.

55705819 is a deficient number, since it is larger than the sum of its proper divisors (5131013).

55705819 is a wasteful number, since it uses less digits than its factorization.

55705819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60437.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 55705819 is about 7463.6330965556. The cubic root of 55705819 is about 381.9151219002.

The spelling of 55705819 in words is "fifty-five million, seven hundred five thousand, eight hundred nineteen".