55087418 has 4 divisors (see below), whose sum is σ = 82631130. Its totient is φ = 27543708.

The previous prime is 55087399. The next prime is 55087421. The reversal of 55087418 is 81478055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47375689 + 7711729 = 6883^2 + 2777^2 .

It is an unprimeable number.

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, 13771853 + ... + 13771856.

Almost surely, 2^55087418 is an apocalyptic number.

55087418 is a deficient number, since it is larger than the sum of its proper divisors (27543712).

55087418 is a wasteful number, since it uses less digits than its factorization.

55087418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27543711.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 55087418 is about 7422.0898674161. The cubic root of 55087418 is about 380.4966221497.

The spelling of 55087418 in words is "fifty-five million, eighty-seven thousand, four hundred eighteen".