20898501 has 8 divisors (see below), whose sum is σ = 30008160. Its totient is φ = 12860592.

The previous prime is 20898481. The next prime is 20898529. The reversal of 20898501 is 10589802.

It is a happy number.

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

It is not a de Polignac number, because 20898501 - 2¹⁰ = 20897477 is a prime.

It is a super-3 number, since 3×20898501³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20898571) 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, 267891 + ... + 267968.

It is an arithmetic number, because the mean of its divisors is an integer number (3751020).

Almost surely, 2^20898501 is an apocalyptic number.

It is an amenable number.

20898501 is a deficient number, since it is larger than the sum of its proper divisors (9109659).

20898501 is a wasteful number, since it uses less digits than its factorization.

20898501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535875.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 20898501 is about 4571.4878322052. The cubic root of 20898501 is about 275.4472106347.

The spelling of 20898501 in words is "twenty million, eight hundred ninety-eight thousand, five hundred one".