20452550 has 24 divisors (see below), whose sum is σ = 40045800. Its totient is φ = 7750080.

The previous prime is 20452519. The next prime is 20452559. The reversal of 20452550 is 5525402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452559) 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, 9815 + ... + 11714.

It is an arithmetic number, because the mean of its divisors is an integer number (1668575).

Almost surely, 2^20452550 is an apocalyptic number.

20452550 is a deficient number, since it is larger than the sum of its proper divisors (19593250).

20452550 is a wasteful number, since it uses less digits than its factorization.

20452550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21560 (or 21555 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 20452550 is about 4522.4495574854. The cubic root of 20452550 is about 273.4738602532.

Adding to 20452550 its reverse (5525402), we get a palindrome (25977952).

The spelling of 20452550 in words is "twenty million, four hundred fifty-two thousand, five hundred fifty".