1021513053 has 32 divisors (see below), whose sum is σ = 1553126400. Its totient is φ = 591155840.

The previous prime is 1021513027. The next prime is 1021513123. The reversal of 1021513053 is 3503151201.

It is not a de Polignac number, because 1021513053 - 2¹⁴ = 1021496669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021523053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 795550 + ... + 796832.

It is an arithmetic number, because the mean of its divisors is an integer number (48535200).

Almost surely, 2^1021513053 is an apocalyptic number.

It is an amenable number.

1021513053 is a deficient number, since it is larger than the sum of its proper divisors (531613347).

1021513053 is a wasteful number, since it uses less digits than its factorization.

1021513053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1021513053 is about 31961.1178308895. The cubic root of 1021513053 is about 1007.1202000925.

Adding to 1021513053 its reverse (3503151201), we get a palindrome (4524664254).

The spelling of 1021513053 in words is "one billion, twenty-one million, five hundred thirteen thousand, fifty-three".