20554450 has 24 divisors (see below), whose sum is σ = 43693632. Its totient is φ = 7047120.

The previous prime is 20554441. The next prime is 20554453. The reversal of 20554450 is 5445502.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (20554453) 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, 29014 + ... + 29713.

It is an arithmetic number, because the mean of its divisors is an integer number (1820568).

Almost surely, 2^20554450 is an apocalyptic number.

20554450 is an abundant number, since it is smaller than the sum of its proper divisors (23139182).

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

20554450 is a wasteful number, since it uses less digits than its factorization.

20554450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58746 (or 58741 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 20554450 is about 4533.7015781809. The cubic root of 20554450 is about 273.9272810379.

Adding to 20554450 its reverse (5445502), we get a palindrome (25999952).

The spelling of 20554450 in words is "twenty million, five hundred fifty-four thousand, four hundred fifty".