22455550 has 48 divisors (see below), whose sum is σ = 45465840. Its totient is φ = 8202240.

The previous prime is 22455547. The next prime is 22455551. The reversal of 22455550 is 5555422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22455551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116254 + ... + 116446.

It is an arithmetic number, because the mean of its divisors is an integer number (947205).

Almost surely, 2^22455550 is an apocalyptic number.

22455550 is an abundant number, since it is smaller than the sum of its proper divisors (23010290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22455550 is a wasteful number, since it uses less digits than its factorization.

22455550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 22455550 is about 4738.7287324767. The cubic root of 22455550 is about 282.1247792112.

It can be divided in two parts, 22455 and 550, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 22455550 in words is "twenty-two million, four hundred fifty-five thousand, five hundred fifty".