22072550 has 24 divisors (see below), whose sum is σ = 41227272. Its totient is φ = 8792000.

The previous prime is 22072541. The next prime is 22072553. The reversal of 22072550 is 5527022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22072553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13265 + ... + 14835.

It is an arithmetic number, because the mean of its divisors is an integer number (1717803).

Almost surely, 2^22072550 is an apocalyptic number.

22072550 is a deficient number, since it is larger than the sum of its proper divisors (19154722).

22072550 is a wasteful number, since it uses less digits than its factorization.

22072550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864 (or 1859 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 22072550 is about 4698.1432502639. The cubic root of 22072550 is about 280.5116071552.

Adding to 22072550 its reverse (5527022), we get a palindrome (27599572).

It can be divided in two parts, 22072 and 550, that added together give a palindrome (22622).

The spelling of 22072550 in words is "twenty-two million, seventy-two thousand, five hundred fifty".