55073812 has 12 divisors (see below), whose sum is σ = 102048660. Its totient is φ = 25917056.

The previous prime is 55073807. The next prime is 55073819. The reversal of 55073812 is 21837055.

It can be written as a sum of positive squares in 2 ways, for example, as 20921476 + 34152336 = 4574^2 + 5844^2 .

It is a super-2 number, since 2×55073812² = 6066249536422688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55073819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404887 + ... + 405022.

It is an arithmetic number, because the mean of its divisors is an integer number (8504055).

Almost surely, 2^55073812 is an apocalyptic number.

It is an amenable number.

55073812 is a deficient number, since it is larger than the sum of its proper divisors (46974848).

55073812 is a wasteful number, since it uses less digits than its factorization.

55073812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809930 (or 809928 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 55073812 is about 7421.1732226111. The cubic root of 55073812 is about 380.4652933786.

The spelling of 55073812 in words is "fifty-five million, seventy-three thousand, eight hundred twelve".