55061312 has 14 divisors (see below), whose sum is σ = 109262418. Its totient is φ = 27530624.

The previous prime is 55061273. The next prime is 55061323. The reversal of 55061312 is 21316055.

It can be written as a sum of positive squares in only one way, i.e., 49224256 + 5837056 = 7016^2 + 2416^2 .

It is a super-2 number, since 2×55061312² = 6063496158322688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430103 + ... + 430230.

Almost surely, 2^55061312 is an apocalyptic number.

It is an amenable number.

55061312 is a deficient number, since it is larger than the sum of its proper divisors (54201106).

55061312 is an equidigital number, since it uses as much as digits as its factorization.

55061312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860345 (or 860335 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 55061312 is about 7420.3309899222. The cubic root of 55061312 is about 380.4365067022.

Adding to 55061312 its reverse (21316055), we get a palindrome (76377367).

The spelling of 55061312 in words is "fifty-five million, sixty-one thousand, three hundred twelve".