20552587 has 8 divisors (see below), whose sum is σ = 22460400. Its totient is φ = 18651360.

The previous prime is 20552579. The next prime is 20552611. The reversal of 20552587 is 78525502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20552587 - 2³ = 20552579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20552527) 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, 6789 + ... + 9337.

It is an arithmetic number, because the mean of its divisors is an integer number (2807550).

Almost surely, 2^20552587 is an apocalyptic number.

20552587 is a deficient number, since it is larger than the sum of its proper divisors (1907813).

20552587 is a wasteful number, since it uses less digits than its factorization.

20552587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 20552587 is about 4533.4961122736. The cubic root of 20552587 is about 273.9190047775.

The spelling of 20552587 in words is "twenty million, five hundred fifty-two thousand, five hundred eighty-seven".