20552501 has 8 divisors (see below), whose sum is σ = 22026624. Its totient is φ = 19126800.

The previous prime is 20552491. The next prime is 20552513. The reversal of 20552501 is 10525502.

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

It is not a de Polignac number, because 20552501 - 2¹⁰ = 20551477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552531) 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, 11225 + ... + 12926.

It is an arithmetic number, because the mean of its divisors is an integer number (2753328).

Almost surely, 2^20552501 is an apocalyptic number.

It is an amenable number.

20552501 is a deficient number, since it is larger than the sum of its proper divisors (1474123).

20552501 is a wasteful number, since it uses less digits than its factorization.

20552501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24211.

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

The square root of 20552501 is about 4533.4866273102. The cubic root of 20552501 is about 273.9186227158.

The spelling of 20552501 in words is "twenty million, five hundred fifty-two thousand, five hundred one".