20552750 has 32 divisors (see below), whose sum is σ = 38750400. Its totient is φ = 8162400.

The previous prime is 20552717. The next prime is 20552759. The reversal of 20552750 is 5725502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552759) 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 15 ways as a sum of consecutive naturals, for example, 57071 + ... + 57429.

It is an arithmetic number, because the mean of its divisors is an integer number (1210950).

Almost surely, 2^20552750 is an apocalyptic number.

20552750 is a deficient number, since it is larger than the sum of its proper divisors (18197650).

20552750 is a wasteful number, since it uses less digits than its factorization.

20552750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 20552750 is about 4533.5140895336. The cubic root of 20552750 is about 273.9197289147.

The spelling of 20552750 in words is "twenty million, five hundred fifty-two thousand, seven hundred fifty".