22002555 has 16 divisors (see below), whose sum is σ = 35424000. Its totient is φ = 11661408.

The previous prime is 22002511. The next prime is 22002557. The reversal of 22002555 is 55520022.

It is not a de Polignac number, because 22002555 - 2¹³ = 21994363 is a prime.

It is a super-2 number, since 2×22002555² = 968224853056050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22002557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2055 + ... + 6944.

It is an arithmetic number, because the mean of its divisors is an integer number (2214000).

Almost surely, 2^22002555 is an apocalyptic number.

22002555 is a deficient number, since it is larger than the sum of its proper divisors (13421445).

22002555 is a wasteful number, since it uses less digits than its factorization.

22002555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9170.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 22002555 is about 4690.6881158312. The cubic root of 22002555 is about 280.2147799343.

Adding to 22002555 its reverse (55520022), we get a palindrome (77522577).

The spelling of 22002555 in words is "twenty-two million, two thousand, five hundred fifty-five".