53905549 has 4 divisors (see below), whose sum is σ = 54048160. Its totient is φ = 53762940.

The previous prime is 53905547. The next prime is 53905597. The reversal of 53905549 is 94550935.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53905549 - 2¹ = 53905547 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53905547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70737 + ... + 71494.

It is an arithmetic number, because the mean of its divisors is an integer number (13512040).

Almost surely, 2^53905549 is an apocalyptic number.

It is an amenable number.

53905549 is a deficient number, since it is larger than the sum of its proper divisors (142611).

53905549 is a wasteful number, since it uses less digits than its factorization.

53905549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142610.

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 53905549 is about 7342.0398391728. The cubic root of 53905549 is about 377.7558145023.

The spelling of 53905549 in words is "fifty-three million, nine hundred five thousand, five hundred forty-nine".