53971707 has 4 divisors (see below), whose sum is σ = 71962280. Its totient is φ = 35981136.

The previous prime is 53971693. The next prime is 53971711. The reversal of 53971707 is 70717935.

It is a happy number.

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

It is not a de Polignac number, because 53971707 - 2¹⁹ = 53447419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53971727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8995282 + ... + 8995287.

It is an arithmetic number, because the mean of its divisors is an integer number (17990570).

Almost surely, 2^53971707 is an apocalyptic number.

53971707 is a deficient number, since it is larger than the sum of its proper divisors (17990573).

53971707 is a wasteful number, since it uses less digits than its factorization.

53971707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17990572.

The product of its (nonzero) digits is 46305, while the sum is 39.

The square root of 53971707 is about 7346.5438813091. The cubic root of 53971707 is about 377.9102905726.

The spelling of 53971707 in words is "fifty-three million, nine hundred seventy-one thousand, seven hundred seven".