53023513 has 4 divisors (see below), whose sum is σ = 54851940. Its totient is φ = 51195088.

The previous prime is 53023483. The next prime is 53023541. The reversal of 53023513 is 31532035.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38787984 + 14235529 = 6228^2 + 3773^2 .

It is a cyclic number.

It is not a de Polignac number, because 53023513 - 2¹³ = 53015321 is a prime.

It is a super-2 number, since 2×53023513² = 5622985861722338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53023573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914170 + ... + 914227.

It is an arithmetic number, because the mean of its divisors is an integer number (13712985).

Almost surely, 2^53023513 is an apocalyptic number.

It is an amenable number.

53023513 is a deficient number, since it is larger than the sum of its proper divisors (1828427).

53023513 is a wasteful number, since it uses less digits than its factorization.

53023513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828426.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 53023513 is about 7281.7245896834. The cubic root of 53023513 is about 375.6841153524.

Adding to 53023513 its reverse (31532035), we get a palindrome (84555548).

The spelling of 53023513 in words is "fifty-three million, twenty-three thousand, five hundred thirteen".