20461153 has 8 divisors (see below), whose sum is σ = 21364200. Its totient is φ = 19571328.

The previous prime is 20461151. The next prime is 20461171. The reversal of 20461153 is 35116402.

It can be written as a sum of positive squares in 4 ways, for example, as 2211169 + 18249984 = 1487^2 + 4272^2 .

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 20461153 - 2¹ = 20461151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20461151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76 + ... + 6397.

It is an arithmetic number, because the mean of its divisors is an integer number (2670525).

Almost surely, 2^20461153 is an apocalyptic number.

It is an amenable number.

20461153 is a deficient number, since it is larger than the sum of its proper divisors (903047).

20461153 is a wasteful number, since it uses less digits than its factorization.

20461153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6611.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20461153 is about 4523.4006013176. The cubic root of 20461153 is about 273.5121988438.

Adding to 20461153 its reverse (35116402), we get a palindrome (55577555).

The spelling of 20461153 in words is "twenty million, four hundred sixty-one thousand, one hundred fifty-three".