55125312 has 112 divisors (see below), whose sum is σ = 163080192. Its totient is φ = 16289280.

The previous prime is 55125311. The next prime is 55125337. The reversal of 55125312 is 21352155.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55125311) 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, 90513 + ... + 91119.

Almost surely, 2^55125312 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 55125312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81540096).

55125312 is an abundant number, since it is smaller than the sum of its proper divisors (107954880).

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

55125312 is a wasteful number, since it uses less digits than its factorization.

55125312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 666 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 55125312 is about 7424.6422136019. The cubic root of 55125312 is about 380.5838485659.

Adding to 55125312 its reverse (21352155), we get a palindrome (76477467).

The spelling of 55125312 in words is "fifty-five million, one hundred twenty-five thousand, three hundred twelve".