1021002053 has 4 divisors (see below), whose sum is σ = 1027763808. Its totient is φ = 1014240300.

The previous prime is 1021002029. The next prime is 1021002071. The reversal of 1021002053 is 3502001201.

It is a happy number.

1021002053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3502001201 = 523 ⋅6695987.

It is a cyclic number.

It is not a de Polignac number, because 1021002053 - 2¹⁰ = 1021001029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021002553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3380651 + ... + 3380952.

It is an arithmetic number, because the mean of its divisors is an integer number (256940952).

Almost surely, 2^1021002053 is an apocalyptic number.

It is an amenable number.

1021002053 is a deficient number, since it is larger than the sum of its proper divisors (6761755).

1021002053 is an equidigital number, since it uses as much as digits as its factorization.

1021002053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6761754.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1021002053 is about 31953.1227425427. The cubic root of 1021002053 is about 1006.9522387014.

Adding to 1021002053 its reverse (3502001201), we get a palindrome (4523003254).

The spelling of 1021002053 in words is "one billion, twenty-one million, two thousand, fifty-three".