52661615 has 8 divisors (see below), whose sum is σ = 63233568. Its totient is φ = 42102880.

The previous prime is 52661603. The next prime is 52661639. The reversal of 52661615 is 51616625.

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

It is not a de Polignac number, because 52661615 - 2¹⁰ = 52660591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11510 + ... + 15420.

It is an arithmetic number, because the mean of its divisors is an integer number (7904196).

Almost surely, 2^52661615 is an apocalyptic number.

52661615 is a deficient number, since it is larger than the sum of its proper divisors (10571953).

52661615 is a wasteful number, since it uses less digits than its factorization.

52661615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6609.

The product of its digits is 10800, while the sum is 32.

The square root of 52661615 is about 7256.8322979107. The cubic root of 52661615 is about 374.8274524703.

The spelling of 52661615 in words is "fifty-two million, six hundred sixty-one thousand, six hundred fifteen".