52971747 has 4 divisors (see below), whose sum is σ = 70629000. Its totient is φ = 35314496.

The previous prime is 52971739. The next prime is 52971757. The reversal of 52971747 is 74717925.

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 52971747 - 2³ = 52971739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52971699 and 52971708.

It is not an unprimeable number, because it can be changed into a prime (52971727) 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, 8828622 + ... + 8828627.

It is an arithmetic number, because the mean of its divisors is an integer number (17657250).

Almost surely, 2^52971747 is an apocalyptic number.

52971747 is a deficient number, since it is larger than the sum of its proper divisors (17657253).

52971747 is a wasteful number, since it uses less digits than its factorization.

52971747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17657252.

The product of its digits is 123480, while the sum is 42.

The square root of 52971747 is about 7278.1692066068. The cubic root of 52971747 is about 375.5618174317.

The spelling of 52971747 in words is "fifty-two million, nine hundred seventy-one thousand, seven hundred forty-seven".