53505947 has 4 divisors (see below), whose sum is σ = 58370136. Its totient is φ = 48641760.

The previous prime is 53505941. The next prime is 53505971. The reversal of 53505947 is 74950535.

It is a happy number.

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 53505947 - 2⁶ = 53505883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53505947.

It is not an unprimeable number, because it can be changed into a prime (53505941) 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, 2432078 + ... + 2432099.

It is an arithmetic number, because the mean of its divisors is an integer number (14592534).

Almost surely, 2^53505947 is an apocalyptic number.

53505947 is a deficient number, since it is larger than the sum of its proper divisors (4864189).

53505947 is a wasteful number, since it uses less digits than its factorization.

53505947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864188.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 53505947 is about 7314.7759364180. The cubic root of 53505947 is about 376.8200634336.

The spelling of 53505947 in words is "fifty-three million, five hundred five thousand, nine hundred forty-seven".