20153473 has 2 divisors, whose sum is σ = 20153474. Its totient is φ = 20153472.

The previous prime is 20153467. The next prime is 20153477. The reversal of 20153473 is 37435102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15586704 + 4566769 = 3948^2 + 2137^2 .

It is a cyclic number.

It is not a de Polignac number, because 20153473 - 2⁹ = 20152961 is a prime.

It is not a weakly prime, because it can be changed into another prime (20153477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10076736 + 10076737.

It is an arithmetic number, because the mean of its divisors is an integer number (10076737).

Almost surely, 2^20153473 is an apocalyptic number.

It is an amenable number.

20153473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20153473 is an equidigital number, since it uses as much as digits as its factorization.

20153473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20153473 is about 4489.2619660697. The cubic root of 20153473 is about 272.1343095701.

Adding to 20153473 its reverse (37435102), we get a palindrome (57588575).

The spelling of 20153473 in words is "twenty million, one hundred fifty-three thousand, four hundred seventy-three".