53671966 has 4 divisors (see below), whose sum is σ = 80507952. Its totient is φ = 26835982.

The previous prime is 53671957. The next prime is 53671967. The reversal of 53671966 is 66917635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66917635 = 5 ⋅13383527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53671967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13417990 + ... + 13417993.

It is an arithmetic number, because the mean of its divisors is an integer number (20126988).

Almost surely, 2^53671966 is an apocalyptic number.

53671966 is a deficient number, since it is larger than the sum of its proper divisors (26835986).

53671966 is a wasteful number, since it uses less digits than its factorization.

53671966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26835985.

The product of its digits is 204120, while the sum is 43.

The square root of 53671966 is about 7326.1153417074. The cubic root of 53671966 is about 377.2093952221.

The spelling of 53671966 in words is "fifty-three million, six hundred seventy-one thousand, nine hundred sixty-six".