53042521 has 8 divisors (see below), whose sum is σ = 62030144. Its totient is φ = 44407440.

The previous prime is 53042513. The next prime is 53042527. The reversal of 53042521 is 12524035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53042521 - 2³ = 53042513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53042492 and 53042501.

It is not an unprimeable number, because it can be changed into a prime (53042527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87810 + ... + 88411.

It is an arithmetic number, because the mean of its divisors is an integer number (7753768).

Almost surely, 2^53042521 is an apocalyptic number.

It is an amenable number.

53042521 is a deficient number, since it is larger than the sum of its proper divisors (8987623).

53042521 is a wasteful number, since it uses less digits than its factorization.

53042521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176271.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 53042521 is about 7283.0296580475. The cubic root of 53042521 is about 375.7290020459.

Adding to 53042521 its reverse (12524035), we get a palindrome (65566556).

The spelling of 53042521 in words is "fifty-three million, forty-two thousand, five hundred twenty-one".