20153055 has 16 divisors (see below), whose sum is σ = 34725600. Its totient is φ = 9921408.

The previous prime is 20153051. The next prime is 20153093. The reversal of 20153055 is 55035102.

It is not a de Polignac number, because 20153055 - 2² = 20153051 is a prime.

It is a super-2 number, since 2×20153055² = 812291251666050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51480 + ... + 51869.

It is an arithmetic number, because the mean of its divisors is an integer number (2170350).

Almost surely, 2^20153055 is an apocalyptic number.

20153055 is a deficient number, since it is larger than the sum of its proper divisors (14572545).

20153055 is a wasteful number, since it uses less digits than its factorization.

20153055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103370.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 20153055 is about 4489.2154102916. The cubic root of 20153055 is about 272.1324281255.

Adding to 20153055 its reverse (55035102), we get a palindrome (75188157).

The spelling of 20153055 in words is "twenty million, one hundred fifty-three thousand, fifty-five".