53959947 has 4 divisors (see below), whose sum is σ = 71946600. Its totient is φ = 35973296.

The previous prime is 53959931. The next prime is 53959963. The reversal of 53959947 is 74995935.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (53959931) and next prime (53959963).

It is a cyclic number.

It is not a de Polignac number, because 53959947 - 2⁴ = 53959931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53959947.

It is not an unprimeable number, because it can be changed into a prime (53959967) 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, 8993322 + ... + 8993327.

It is an arithmetic number, because the mean of its divisors is an integer number (17986650).

Almost surely, 2^53959947 is an apocalyptic number.

53959947 is a deficient number, since it is larger than the sum of its proper divisors (17986653).

53959947 is a wasteful number, since it uses less digits than its factorization.

53959947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17986652.

The product of its digits is 1530900, while the sum is 51.

The square root of 53959947 is about 7345.7434613523. The cubic root of 53959947 is about 377.8828407099.

The spelling of 53959947 in words is "fifty-three million, nine hundred fifty-nine thousand, nine hundred forty-seven".