20553701 has 8 divisors (see below), whose sum is σ = 23614464. Its totient is φ = 17524080.

The previous prime is 20553691. The next prime is 20553703. The reversal of 20553701 is 10735502.

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

It is not a de Polignac number, because 20553701 - 2¹⁴ = 20537317 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 (20553703) 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, 6350 + ... + 9023.

It is an arithmetic number, because the mean of its divisors is an integer number (2951808).

Almost surely, 2^20553701 is an apocalyptic number.

It is an amenable number.

20553701 is a deficient number, since it is larger than the sum of its proper divisors (3060763).

20553701 is a wasteful number, since it uses less digits than its factorization.

20553701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15571.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 20553701 is about 4533.6189738442. The cubic root of 20553701 is about 273.9239537126.

The spelling of 20553701 in words is "twenty million, five hundred fifty-three thousand, seven hundred one".