55905422 has 4 divisors (see below), whose sum is σ = 83858136. Its totient is φ = 27952710.

The previous prime is 55905389. The next prime is 55905457. The reversal of 55905422 is 22450955.

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

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, 13976354 + ... + 13976357.

It is an arithmetic number, because the mean of its divisors is an integer number (20964534).

Almost surely, 2^55905422 is an apocalyptic number.

55905422 is a deficient number, since it is larger than the sum of its proper divisors (27952714).

55905422 is a wasteful number, since it uses less digits than its factorization.

55905422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27952713.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 55905422 is about 7476.9928447204. The cubic root of 55905422 is about 382.3707328006.

The spelling of 55905422 in words is "fifty-five million, nine hundred five thousand, four hundred twenty-two".