55522012 has 24 divisors (see below), whose sum is σ = 119586656. Its totient is φ = 21964608.

The previous prime is 55522007. The next prime is 55522013. The reversal of 55522012 is 21022555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55522013) 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, 75903 + ... + 76630.

Almost surely, 2^55522012 is an apocalyptic number.

55522012 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55522012 is an abundant number, since it is smaller than the sum of its proper divisors (64064644).

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

55522012 is a wasteful number, since it uses less digits than its factorization.

55522012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152557 (or 152555 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 55522012 is about 7451.3094151297. The cubic root of 55522012 is about 381.4946031517.

Adding to 55522012 its reverse (21022555), we get a palindrome (76544567).

The spelling of 55522012 in words is "fifty-five million, five hundred twenty-two thousand, twelve".