52768991 has 8 divisors (see below), whose sum is σ = 57631824. Its totient is φ = 47917120.

The previous prime is 52768957. The next prime is 52768997. The reversal of 52768991 is 19986725.

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

It is a cyclic number.

It is not a de Polignac number, because 52768991 - 2¹⁸ = 52506847 is a prime.

It is a super-2 number, since 2×52768991² = 5569132822316162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52768997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9881 + ... + 14253.

It is an arithmetic number, because the mean of its divisors is an integer number (7203978).

Almost surely, 2^52768991 is an apocalyptic number.

52768991 is a deficient number, since it is larger than the sum of its proper divisors (4862833).

52768991 is a wasteful number, since it uses less digits than its factorization.

52768991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481.

The product of its digits is 272160, while the sum is 47.

The square root of 52768991 is about 7264.2267998735. The cubic root of 52768991 is about 375.0820347935.

The spelling of 52768991 in words is "fifty-two million, seven hundred sixty-eight thousand, nine hundred ninety-one".