55181416 has 32 divisors (see below), whose sum is σ = 108360000. Its totient is φ = 26294400.

The previous prime is 55181411. The next prime is 55181417. The reversal of 55181416 is 61418155.

It is not an unprimeable number, because it can be changed into a prime (55181411) 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, 91516 + ... + 92116.

It is an arithmetic number, because the mean of its divisors is an integer number (3386250).

Almost surely, 2^55181416 is an apocalyptic number.

It is an amenable number.

55181416 is a deficient number, since it is larger than the sum of its proper divisors (53178584).

55181416 is a wasteful number, since it uses less digits than its factorization.

55181416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129 (or 1125 counting only the distinct ones).

The product of its digits is 4800, while the sum is 31.

The square root of 55181416 is about 7428.4194819625. The cubic root of 55181416 is about 380.7129183512.

The spelling of 55181416 in words is "fifty-five million, one hundred eighty-one thousand, four hundred sixteen".