20295155 has 8 divisors (see below), whose sum is σ = 24516384. Its totient is φ = 16128000.

The previous prime is 20295133. The next prime is 20295167. The reversal of 20295155 is 55159202.

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

It is not a de Polignac number, because 20295155 - 2⁶ = 20295091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12686 + ... + 14195.

It is an arithmetic number, because the mean of its divisors is an integer number (3064548).

Almost surely, 2^20295155 is an apocalyptic number.

20295155 is a deficient number, since it is larger than the sum of its proper divisors (4221229).

20295155 is a wasteful number, since it uses less digits than its factorization.

20295155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27037.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 20295155 is about 4505.0144283898. The cubic root of 20295155 is about 272.7705362511.

The spelling of 20295155 in words is "twenty million, two hundred ninety-five thousand, one hundred fifty-five".