52921615 has 8 divisors (see below), whose sum is σ = 63551088. Its totient is φ = 42307200.

The previous prime is 52921591. The next prime is 52921621. The reversal of 52921615 is 51612925.

52921615 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 52921615 - 2⁹ = 52921103 is a prime.

It is a Duffinian number.

It is a congruent 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, 6540 + ... + 12190.

It is an arithmetic number, because the mean of its divisors is an integer number (7943886).

Almost surely, 2^52921615 is an apocalyptic number.

52921615 is a deficient number, since it is larger than the sum of its proper divisors (10629473).

52921615 is a wasteful number, since it uses less digits than its factorization.

52921615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7529.

The product of its digits is 5400, while the sum is 31.

The square root of 52921615 is about 7274.7243934049. The cubic root of 52921615 is about 375.4433038927.

The spelling of 52921615 in words is "fifty-two million, nine hundred twenty-one thousand, six hundred fifteen".