52621745 has 8 divisors (see below), whose sum is σ = 68886720. Its totient is φ = 38270320.

The previous prime is 52621729. The next prime is 52621763. The reversal of 52621745 is 54712625.

52621745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52621745 - 2⁴ = 52621729 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478325 + ... + 478434.

It is an arithmetic number, because the mean of its divisors is an integer number (8610840).

Almost surely, 2^52621745 is an apocalyptic number.

52621745 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52621745 is a deficient number, since it is larger than the sum of its proper divisors (16264975).

52621745 is a wasteful number, since it uses less digits than its factorization.

52621745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956775.

The product of its digits is 16800, while the sum is 32.

The square root of 52621745 is about 7254.0847113885. The cubic root of 52621745 is about 374.7328348912.

It can be divided in two parts, 5262 and 1745, that added together give a palindrome (7007).

The spelling of 52621745 in words is "fifty-two million, six hundred twenty-one thousand, seven hundred forty-five".