53921671 has 4 divisors (see below), whose sum is σ = 57093552. Its totient is φ = 50749792.

The previous prime is 53921653. The next prime is 53921717. The reversal of 53921671 is 17612935.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53921671 - 2¹¹ = 53919623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53921611) 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, 1585915 + ... + 1585948.

It is an arithmetic number, because the mean of its divisors is an integer number (14273388).

Almost surely, 2^53921671 is an apocalyptic number.

53921671 is a deficient number, since it is larger than the sum of its proper divisors (3171881).

53921671 is a wasteful number, since it uses less digits than its factorization.

53921671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171880.

The product of its digits is 11340, while the sum is 34.

The square root of 53921671 is about 7343.1376808555. The cubic root of 53921671 is about 377.7934703176.

The spelling of 53921671 in words is "fifty-three million, nine hundred twenty-one thousand, six hundred seventy-one".