20502552 has 32 divisors (see below), whose sum is σ = 58579200. Its totient is φ = 5857824.

The previous prime is 20502533. The next prime is 20502553. The reversal of 20502552 is 25520502.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20502553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60852 + ... + 61187.

It is an arithmetic number, because the mean of its divisors is an integer number (1830600).

Almost surely, 2^20502552 is an apocalyptic number.

It is an amenable number.

20502552 is an abundant number, since it is smaller than the sum of its proper divisors (38076648).

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

20502552 is a wasteful number, since it uses less digits than its factorization.

20502552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122055 (or 122051 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 20502552 is about 4527.9743815530. The cubic root of 20502552 is about 273.6965400913.

The spelling of 20502552 in words is "twenty million, five hundred two thousand, five hundred fifty-two".