53521743 has 8 divisors (see below), whose sum is σ = 77849856. Its totient is φ = 32437400.

The previous prime is 53521723. The next prime is 53521751. The reversal of 53521743 is 34712535.

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

It is a cyclic number.

It is not a de Polignac number, because 53521743 - 2¹² = 53517647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53521743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53521703) 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, 810903 + ... + 810968.

It is an arithmetic number, because the mean of its divisors is an integer number (9731232).

Almost surely, 2^53521743 is an apocalyptic number.

53521743 is a deficient number, since it is larger than the sum of its proper divisors (24328113).

53521743 is a wasteful number, since it uses less digits than its factorization.

53521743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621885.

The product of its digits is 12600, while the sum is 30.

The square root of 53521743 is about 7315.8555890613. The cubic root of 53521743 is about 376.8571413312.

The spelling of 53521743 in words is "fifty-three million, five hundred twenty-one thousand, seven hundred forty-three".