20156153 has 2 divisors, whose sum is σ = 20156154. Its totient is φ = 20156152.

The previous prime is 20156137. The next prime is 20156177. The reversal of 20156153 is 35165102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16345849 + 3810304 = 4043^2 + 1952^2 .

It is a cyclic number.

It is not a de Polignac number, because 20156153 - 2⁴ = 20156137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20156183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10078076 + 10078077.

It is an arithmetic number, because the mean of its divisors is an integer number (10078077).

Almost surely, 2^20156153 is an apocalyptic number.

It is an amenable number.

20156153 is a deficient number, since it is larger than the sum of its proper divisors (1).

20156153 is an equidigital number, since it uses as much as digits as its factorization.

20156153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 20156153 is about 4489.5604461907. The cubic root of 20156153 is about 272.1463718025.

The spelling of 20156153 in words is "twenty million, one hundred fifty-six thousand, one hundred fifty-three".