55162819 has 8 divisors (see below), whose sum is σ = 57860928. Its totient is φ = 52528320.

The previous prime is 55162813. The next prime is 55162837. The reversal of 55162819 is 91826155.

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 55162819 - 2⁵ = 55162787 is a prime.

It is a super-2 number, since 2×55162819² = 6085873200053522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55162813) 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, 14122 + ... + 17599.

It is an arithmetic number, because the mean of its divisors is an integer number (7232616).

Almost surely, 2^55162819 is an apocalyptic number.

55162819 is a deficient number, since it is larger than the sum of its proper divisors (2698109).

55162819 is a wasteful number, since it uses less digits than its factorization.

55162819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31805.

The product of its digits is 21600, while the sum is 37.

The square root of 55162819 is about 7427.1676297227. The cubic root of 55162819 is about 380.6701448103.

The spelling of 55162819 in words is "fifty-five million, one hundred sixty-two thousand, eight hundred nineteen".