53827521 has 16 divisors (see below), whose sum is σ = 81699840. Its totient is φ = 31203920.

The previous prime is 53827511. The next prime is 53827537. The reversal of 53827521 is 12572835.

It is not a de Polignac number, because 53827521 - 2⁹ = 53827009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53827511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34701 + ... + 36218.

It is an arithmetic number, because the mean of its divisors is an integer number (5106240).

Almost surely, 2^53827521 is an apocalyptic number.

It is an amenable number.

53827521 is a deficient number, since it is larger than the sum of its proper divisors (27872319).

53827521 is a wasteful number, since it uses less digits than its factorization.

53827521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70956.

The product of its digits is 16800, while the sum is 33.

The square root of 53827521 is about 7336.7241327448. The cubic root of 53827521 is about 377.5734599669.

The spelling of 53827521 in words is "fifty-three million, eight hundred twenty-seven thousand, five hundred twenty-one".