20215053 has 6 divisors (see below), whose sum is σ = 29199534. Its totient is φ = 13476696.

The previous prime is 20215037. The next prime is 20215093. The reversal of 20215053 is 35051202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19554084 + 660969 = 4422^2 + 813^2 .

It is not a de Polignac number, because 20215053 - 2⁴ = 20215037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1123050 + ... + 1123067.

It is an arithmetic number, because the mean of its divisors is an integer number (4866589).

Almost surely, 2^20215053 is an apocalyptic number.

It is an amenable number.

20215053 is a deficient number, since it is larger than the sum of its proper divisors (8984481).

20215053 is a wasteful number, since it uses less digits than its factorization.

20215053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246123 (or 2246120 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20215053 is about 4496.1153232541. The cubic root of 20215053 is about 272.4112013222.

Adding to 20215053 its reverse (35051202), we get a palindrome (55266255).

The spelling of 20215053 in words is "twenty million, two hundred fifteen thousand, fifty-three".