20052550 has 96 divisors (see below), whose sum is σ = 46282752. Its totient is φ = 6314880.

The previous prime is 20052541. The next prime is 20052559. The reversal of 20052550 is 5525002.

20052550 = 120² + 121² + ... + 395².

It is an interprime number because it is at equal distance from previous prime (20052541) and next prime (20052559).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20052559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 378324 + ... + 378376.

It is an arithmetic number, because the mean of its divisors is an integer number (482112).

Almost surely, 2^20052550 is an apocalyptic number.

20052550 is an abundant number, since it is smaller than the sum of its proper divisors (26230202).

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

20052550 is a wasteful number, since it uses less digits than its factorization.

20052550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 20052550 is about 4478.0073693553. The cubic root of 20052550 is about 271.6792914872.

Adding to 20052550 its reverse (5525002), we get a palindrome (25577552).

It can be divided in two parts, 20052 and 550, that added together give a palindrome (20602).

The spelling of 20052550 in words is "twenty million, fifty-two thousand, five hundred fifty".