2021455053 has 12 divisors (see below), whose sum is σ = 2920779420. Its totient is φ = 1347221376.

The previous prime is 2021455019. The next prime is 2021455061. The reversal of 2021455053 is 3505541202.

It is a happy number.

2021455053 is a `hidden beast` number, since 202 + 1 + 455 + 0 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1916863524 + 104591529 = 43782^2 + 10227^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2021455053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021455253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2188 + ... + 63621.

It is an arithmetic number, because the mean of its divisors is an integer number (243398285).

Almost surely, 2^2021455053 is an apocalyptic number.

It is an amenable number.

2021455053 is a deficient number, since it is larger than the sum of its proper divisors (899324367).

2021455053 is a wasteful number, since it uses less digits than its factorization.

2021455053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69228 (or 69225 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2021455053 is about 44960.5944466930. The cubic root of 2021455053 is about 1264.4103138769.

Adding to 2021455053 its reverse (3505541202), we get a palindrome (5526996255).

The spelling of 2021455053 in words is "two billion, twenty-one million, four hundred fifty-five thousand, fifty-three".