55187056 has 10 divisors (see below), whose sum is σ = 106924952. Its totient is φ = 27593520.

The previous prime is 55187047. The next prime is 55187057. The reversal of 55187056 is 65078155.

It is a super-2 number, since 2×55187056² = 6091222299894272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55187057) 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 as a sum of consecutive naturals, namely, 1724580 + ... + 1724611.

Almost surely, 2^55187056 is an apocalyptic number.

It is an amenable number.

55187056 is a deficient number, since it is larger than the sum of its proper divisors (51737896).

55187056 is a wasteful number, since it uses less digits than its factorization.

55187056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449199 (or 3449193 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 55187056 is about 7428.7990954124. The cubic root of 55187056 is about 380.7258885856.

The spelling of 55187056 in words is "fifty-five million, one hundred eighty-seven thousand, fifty-six".