20152550 has 36 divisors (see below), whose sum is σ = 41213508. Its totient is φ = 7326000.

The previous prime is 20152549. The next prime is 20152589. The reversal of 20152550 is 5525102.

It is a super-2 number, since 2×20152550² = 812250543005000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4385 + ... + 7715.

Almost surely, 2^20152550 is an apocalyptic number.

20152550 is an abundant number, since it is smaller than the sum of its proper divisors (21060958).

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

20152550 is a wasteful number, since it uses less digits than its factorization.

20152550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365 (or 3349 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 20152550 is about 4489.1591640306. The cubic root of 20152550 is about 272.1301550537.

Adding to 20152550 its reverse (5525102), we get a palindrome (25677652).

It can be divided in two parts, 20152 and 550, that added together give a palindrome (20702).

The spelling of 20152550 in words is "twenty million, one hundred fifty-two thousand, five hundred fifty".