53065731 has 4 divisors (see below), whose sum is σ = 70754312. Its totient is φ = 35377152.

The previous prime is 53065723. The next prime is 53065739. The reversal of 53065731 is 13756035.

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 (53065723) and next prime (53065739).

It is not a de Polignac number, because 53065731 - 2³ = 53065723 is a prime.

It is a super-2 number, since 2×53065731² = 5631943613128722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53065739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8844286 + ... + 8844291.

It is an arithmetic number, because the mean of its divisors is an integer number (17688578).

Almost surely, 2^53065731 is an apocalyptic number.

53065731 is a deficient number, since it is larger than the sum of its proper divisors (17688581).

53065731 is a wasteful number, since it uses less digits than its factorization.

53065731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17688580.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 53065731 is about 7284.6229140567. The cubic root of 53065731 is about 375.7837970688.

The spelling of 53065731 in words is "fifty-three million, sixty-five thousand, seven hundred thirty-one".