53512521 has 8 divisors (see below), whose sum is σ = 71385120. Its totient is φ = 35657472.

The previous prime is 53512441. The next prime is 53512523. The reversal of 53512521 is 12521535.

It is a happy number.

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

It is not a de Polignac number, because 53512521 - 2¹³ = 53504329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53512491 and 53512500.

It is not an unprimeable number, because it can be changed into a prime (53512523) 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, 6825 + ... + 12393.

It is an arithmetic number, because the mean of its divisors is an integer number (8923140).

Almost surely, 2^53512521 is an apocalyptic number.

It is an amenable number.

53512521 is a deficient number, since it is larger than the sum of its proper divisors (17872599).

53512521 is a wasteful number, since it uses less digits than its factorization.

53512521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8775.

The product of its digits is 1500, while the sum is 24.

The square root of 53512521 is about 7315.2252870298. The cubic root of 53512521 is about 376.8354954481.

The spelling of 53512521 in words is "fifty-three million, five hundred twelve thousand, five hundred twenty-one".