55061812 has 24 divisors (see below), whose sum is σ = 104039936. Its totient is φ = 25347168.

The previous prime is 55061803. The next prime is 55061819. The reversal of 55061812 is 21816055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55061819) 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 7 ways as a sum of consecutive naturals, for example, 22933 + ... + 25219.

Almost surely, 2^55061812 is an apocalyptic number.

55061812 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55061812 is a deficient number, since it is larger than the sum of its proper divisors (48978124).

55061812 is a wasteful number, since it uses less digits than its factorization.

55061812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767 (or 2765 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 55061812 is about 7420.3646810652. The cubic root of 55061812 is about 380.4376582529.

Adding to 55061812 its reverse (21816055), we get a palindrome (76877867).

The spelling of 55061812 in words is "fifty-five million, sixty-one thousand, eight hundred twelve".