20292553 has 4 divisors (see below), whose sum is σ = 20368260. Its totient is φ = 20216848.

The previous prime is 20292541. The next prime is 20292557. The reversal of 20292553 is 35529202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11370384 + 8922169 = 3372^2 + 2987^2 .

It is a cyclic number.

It is not a de Polignac number, because 20292553 - 2⁵ = 20292521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20292557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37450 + ... + 37987.

It is an arithmetic number, because the mean of its divisors is an integer number (5092065).

Almost surely, 2^20292553 is an apocalyptic number.

It is an amenable number.

20292553 is a deficient number, since it is larger than the sum of its proper divisors (75707).

20292553 is an equidigital number, since it uses as much as digits as its factorization.

20292553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75706.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 20292553 is about 4504.7256298248. The cubic root of 20292553 is about 272.7588786368.

The spelling of 20292553 in words is "twenty million, two hundred ninety-two thousand, five hundred fifty-three".