20153039 has 4 divisors (see below), whose sum is σ = 20225040. Its totient is φ = 20081040.

The previous prime is 20153033. The next prime is 20153047. The reversal of 20153039 is 93035102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93035102 = 2 ⋅46517551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20153039 is a prime.

It is a super-2 number, since 2×20153039² = 812289961871042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153033) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 35579 + ... + 36140.

It is an arithmetic number, because the mean of its divisors is an integer number (5056260).

Almost surely, 2^20153039 is an apocalyptic number.

20153039 is a deficient number, since it is larger than the sum of its proper divisors (72001).

20153039 is an equidigital number, since it uses as much as digits as its factorization.

20153039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72000.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 20153039 is about 4489.2136282427. The cubic root of 20153039 is about 272.1323561080.

The spelling of 20153039 in words is "twenty million, one hundred fifty-three thousand, thirty-nine".