52649473 has 4 divisors (see below), whose sum is σ = 53283888. Its totient is φ = 52015060.

The previous prime is 52649419. The next prime is 52649477. The reversal of 52649473 is 37494625.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52649473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52649477) 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, 317083 + ... + 317248.

It is an arithmetic number, because the mean of its divisors is an integer number (13320972).

Almost surely, 2^52649473 is an apocalyptic number.

It is an amenable number.

52649473 is a deficient number, since it is larger than the sum of its proper divisors (634415).

52649473 is an equidigital number, since it uses as much as digits as its factorization.

52649473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634414.

The product of its digits is 181440, while the sum is 40.

The square root of 52649473 is about 7255.9956587639. The cubic root of 52649473 is about 374.7986427148.

The spelling of 52649473 in words is "fifty-two million, six hundred forty-nine thousand, four hundred seventy-three".