52655991 has 8 divisors (see below), whose sum is σ = 70356480. Its totient is φ = 35029752.

The previous prime is 52655983. The next prime is 52656001. The reversal of 52655991 is 19955625.

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

It is not a de Polignac number, because 52655991 - 2³ = 52655983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52655971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16885 + ... + 19758.

It is an arithmetic number, because the mean of its divisors is an integer number (8794560).

Almost surely, 2^52655991 is an apocalyptic number.

52655991 is a deficient number, since it is larger than the sum of its proper divisors (17700489).

52655991 is a wasteful number, since it uses less digits than its factorization.

52655991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37125.

The product of its digits is 121500, while the sum is 42.

The square root of 52655991 is about 7256.4447906671. Note that the first 3 decimals coincide. The cubic root of 52655991 is about 374.8141087560.

The spelling of 52655991 in words is "fifty-two million, six hundred fifty-five thousand, nine hundred ninety-one".