52278791 has 8 divisors (see below), whose sum is σ = 56134944. Its totient is φ = 48509440.

The previous prime is 52278761. The next prime is 52278797. The reversal of 52278791 is 19787225.

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 52278791 - 2¹⁰ = 52277767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52278797) 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, 20450 + ... + 22863.

It is an arithmetic number, because the mean of its divisors is an integer number (7016868).

Almost surely, 2^52278791 is an apocalyptic number.

52278791 is a deficient number, since it is larger than the sum of its proper divisors (3856153).

52278791 is a wasteful number, since it uses less digits than its factorization.

52278791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43401.

The product of its digits is 70560, while the sum is 41.

The square root of 52278791 is about 7230.4073882458. The cubic root of 52278791 is about 373.9169723325.

The spelling of 52278791 in words is "fifty-two million, two hundred seventy-eight thousand, seven hundred ninety-one".