55216146 has 32 divisors (see below), whose sum is σ = 118960128. Its totient is φ = 17035920.

The previous prime is 55216141. The next prime is 55216151. The reversal of 55216146 is 64161255.

It is an interprime number because it is at equal distance from previous prime (55216141) and next prime (55216151).

It is not an unprimeable number, because it can be changed into a prime (55216141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2176 + ... + 10731.

It is an arithmetic number, because the mean of its divisors is an integer number (3717504).

Almost surely, 2^55216146 is an apocalyptic number.

55216146 is an abundant number, since it is smaller than the sum of its proper divisors (63743982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55216146 is a wasteful number, since it uses less digits than its factorization.

55216146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12966.

The product of its digits is 7200, while the sum is 30.

The square root of 55216146 is about 7430.7567582313. The cubic root of 55216146 is about 380.7927724498.

The spelling of 55216146 in words is "fifty-five million, two hundred sixteen thousand, one hundred forty-six".