20069553 has 8 divisors (see below), whose sum is σ = 30582208. Its totient is φ = 11468304.

The previous prime is 20069551. The next prime is 20069579. The reversal of 20069553 is 35596002.

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

It is not a de Polignac number, because 20069553 - 2¹ = 20069551 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20069553.

It is not an unprimeable number, because it can be changed into a prime (20069551) 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, 477826 + ... + 477867.

It is an arithmetic number, because the mean of its divisors is an integer number (3822776).

Almost surely, 2^20069553 is an apocalyptic number.

It is an amenable number.

20069553 is a deficient number, since it is larger than the sum of its proper divisors (10512655).

20069553 is an equidigital number, since it uses as much as digits as its factorization.

20069553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955703.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 20069553 is about 4479.9054677526. The cubic root of 20069553 is about 271.7560574178.

The spelling of 20069553 in words is "twenty million, sixty-nine thousand, five hundred fifty-three".