20153135 has 8 divisors (see below), whose sum is σ = 24272736. Its totient is φ = 16063200.

The previous prime is 20153117. The next prime is 20153141. The reversal of 20153135 is 53135102.

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

It is not a de Polignac number, because 20153135 - 2¹⁸ = 19890991 is a prime.

It is a super-2 number, since 2×20153135² = 812297700656450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5891 + ... + 8660.

It is an arithmetic number, because the mean of its divisors is an integer number (3034092).

Almost surely, 2^20153135 is an apocalyptic number.

20153135 is a deficient number, since it is larger than the sum of its proper divisors (4119601).

20153135 is a wasteful number, since it uses less digits than its factorization.

20153135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14833.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 20153135 is about 4489.2243205258. The cubic root of 20153135 is about 272.1327882126.

Adding to 20153135 its reverse (53135102), we get a palindrome (73288237).

The spelling of 20153135 in words is "twenty million, one hundred fifty-three thousand, one hundred thirty-five".