20153005 has 8 divisors (see below), whose sum is σ = 24255000. Its totient is φ = 16074816.

The previous prime is 20152969. The next prime is 20153009. The reversal of 20153005 is 50035102.

It can be written as a sum of positive squares in 4 ways, for example, as 9223369 + 10929636 = 3037^2 + 3306^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20153005 - 2⁹ = 20152493 is a prime.

It is a super-2 number, since 2×20153005² = 812287221060050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20153005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4030 + ... + 7519.

It is an arithmetic number, because the mean of its divisors is an integer number (3031875).

Almost surely, 2^20153005 is an apocalyptic number.

It is an amenable number.

20153005 is a deficient number, since it is larger than the sum of its proper divisors (4101995).

20153005 is a wasteful number, since it uses less digits than its factorization.

20153005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11903.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 20153005 is about 4489.2098413863. The cubic root of 20153005 is about 272.1322030706.

Adding to 20153005 its reverse (50035102), we get a palindrome (70188107).

The spelling of 20153005 in words is "twenty million, one hundred fifty-three thousand, five".