55875612 has 48 divisors (see below), whose sum is σ = 141063552. Its totient is φ = 17112000.

The previous prime is 55875601. The next prime is 55875613. The reversal of 55875612 is 21657855.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55875613) 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 15 ways as a sum of consecutive naturals, for example, 38443 + ... + 39869.

It is an arithmetic number, because the mean of its divisors is an integer number (2938824).

Almost surely, 2^55875612 is an apocalyptic number.

55875612 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55875612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70531776).

55875612 is an abundant number, since it is smaller than the sum of its proper divisors (85187940).

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

55875612 is a wasteful number, since it uses less digits than its factorization.

55875612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698 (or 1696 counting only the distinct ones).

The product of its digits is 84000, while the sum is 39.

The square root of 55875612 is about 7474.9991304347. Note that the first 3 decimals coincide. The cubic root of 55875612 is about 382.3027578904.

The spelling of 55875612 in words is "fifty-five million, eight hundred seventy-five thousand, six hundred twelve".