52278658 has 8 divisors (see below), whose sum is σ = 79492428. Its totient is φ = 25781184.

The previous prime is 52278643. The next prime is 52278691. The reversal of 52278658 is 85687225.

52278658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52171729 + 106929 = 7223^2 + 327^2 .

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

It is a super-3 number, since 3×52278658³ (a number of 24 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 178891 + ... + 179182.

Almost surely, 2^52278658 is an apocalyptic number.

52278658 is a deficient number, since it is larger than the sum of its proper divisors (27213770).

52278658 is a wasteful number, since it uses less digits than its factorization.

52278658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358148.

The product of its digits is 268800, while the sum is 43.

The square root of 52278658 is about 7230.3981909712. The cubic root of 52278658 is about 373.9166552441.

The spelling of 52278658 in words is "fifty-two million, two hundred seventy-eight thousand, six hundred fifty-eight".