20150553 has 8 divisors (see below), whose sum is σ = 28035648. Its totient is φ = 12849584.

The previous prime is 20150513. The next prime is 20150569. The reversal of 20150553 is 35505102.

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 20150553 - 2¹⁰ = 20149529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20150513) 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 7 ways as a sum of consecutive naturals, for example, 145950 + ... + 146087.

It is an arithmetic number, because the mean of its divisors is an integer number (3504456).

Almost surely, 2^20150553 is an apocalyptic number.

20150553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20150553 is a deficient number, since it is larger than the sum of its proper divisors (7885095).

20150553 is a wasteful number, since it uses less digits than its factorization.

20150553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292063.

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

The square root of 20150553 is about 4488.9367337934. The cubic root of 20150553 is about 272.1211659205.

Adding to 20150553 its reverse (35505102), we get a palindrome (55655655).

The spelling of 20150553 in words is "twenty million, one hundred fifty thousand, five hundred fifty-three".