20146553 has 8 divisors (see below), whose sum is σ = 23415360. Its totient is φ = 16975440.

The previous prime is 20146543. The next prime is 20146573. The reversal of 20146553 is 35564102.

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 20146553 - 2¹⁴ = 20130169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20146523) 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, 23978 + ... + 24803.

It is an arithmetic number, because the mean of its divisors is an integer number (2926920).

Almost surely, 2^20146553 is an apocalyptic number.

It is an amenable number.

20146553 is a deficient number, since it is larger than the sum of its proper divisors (3268807).

20146553 is an equidigital number, since it uses as much as digits as its factorization.

20146553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48847.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 20146553 is about 4488.4911718750. The cubic root of 20146553 is about 272.1031588597.

The spelling of 20146553 in words is "twenty million, one hundred forty-six thousand, five hundred fifty-three".