22774555 has 16 divisors (see below), whose sum is σ = 28108800. Its totient is φ = 17705952.

The previous prime is 22774537. The next prime is 22774567. The reversal of 22774555 is 55547722.

It is a 5-Lehmer number, since φ(22774555) divides (22774555-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 22774555 - 2⁹ = 22774043 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46522 + ... + 47008.

It is an arithmetic number, because the mean of its divisors is an integer number (1756800).

Almost surely, 2^22774555 is an apocalyptic number.

22774555 is a deficient number, since it is larger than the sum of its proper divisors (5334245).

22774555 is a wasteful number, since it uses less digits than its factorization.

22774555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738.

The product of its digits is 98000, while the sum is 37.

The square root of 22774555 is about 4772.2693763031. The cubic root of 22774555 is about 283.4544633938.

It can be divided in two parts, 2277 and 4555, that multiplied together give a triangular number (10371735 = T₄₅₅₄).

The spelling of 22774555 in words is "twenty-two million, seven hundred seventy-four thousand, five hundred fifty-five".