55416312 has 160 divisors (see below), whose sum is σ = 187017600. Its totient is φ = 14976576.

The previous prime is 55416307. The next prime is 55416329. The reversal of 55416312 is 21361455.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 85863 + ... + 86505.

It is an arithmetic number, because the mean of its divisors is an integer number (1168860).

Almost surely, 2^55416312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55416312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93508800).

55416312 is an abundant number, since it is smaller than the sum of its proper divisors (131601288).

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

55416312 is a wasteful number, since it uses less digits than its factorization.

55416312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 674 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 55416312 is about 7444.2133231121. The cubic root of 55416312 is about 381.2523593153.

Adding to 55416312 its reverse (21361455), we get a palindrome (76777767).

The spelling of 55416312 in words is "fifty-five million, four hundred sixteen thousand, three hundred twelve".