22255078 has 4 divisors (see below), whose sum is σ = 33382620. Its totient is φ = 11127538.

The previous prime is 22255069. The next prime is 22255097. The reversal of 22255078 is 87055222.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 5563768 + ... + 5563771.

It is an arithmetic number, because the mean of its divisors is an integer number (8345655).

Almost surely, 2^22255078 is an apocalyptic number.

22255078 is a deficient number, since it is larger than the sum of its proper divisors (11127542).

22255078 is a wasteful number, since it uses less digits than its factorization.

22255078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11127541.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 22255078 is about 4717.5288022438. The cubic root of 22255078 is about 281.2827117178.

The spelling of 22255078 in words is "twenty-two million, two hundred fifty-five thousand, seventy-eight".