55075994 has 4 divisors (see below), whose sum is σ = 82613994. Its totient is φ = 27537996.

The previous prime is 55075987. The next prime is 55076009. The reversal of 55075994 is 49957055.

It is a happy number.

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., 47430769 + 7645225 = 6887^2 + 2765^2 .

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, 13768997 + ... + 13769000.

Almost surely, 2^55075994 is an apocalyptic number.

55075994 is a deficient number, since it is larger than the sum of its proper divisors (27538000).

55075994 is a wasteful number, since it uses less digits than its factorization.

55075994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27537999.

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 55075994 is about 7421.3202329505. The cubic root of 55075994 is about 380.4703179343.

The spelling of 55075994 in words is "fifty-five million, seventy-five thousand, nine hundred ninety-four".