55771012 has 24 divisors (see below), whose sum is σ = 106666560. Its totient is φ = 25304160.

The previous prime is 55771007. The next prime is 55771013. The reversal of 55771012 is 21017755.

It is a super-2 number, since 2×55771012² = 6220811559008288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55771013) 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, 38314 + ... + 39742.

It is an arithmetic number, because the mean of its divisors is an integer number (4444440).

Almost surely, 2^55771012 is an apocalyptic number.

It is an amenable number.

55771012 is a deficient number, since it is larger than the sum of its proper divisors (50895548).

55771012 is a wasteful number, since it uses less digits than its factorization.

55771012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331 (or 2329 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 55771012 is about 7467.9991965720. Note that the first 3 decimals coincide. The cubic root of 55771012 is about 382.0640500041.

Adding to 55771012 its reverse (21017755), we get a palindrome (76788767).

The spelling of 55771012 in words is "fifty-five million, seven hundred seventy-one thousand, twelve".