52858138 has 4 divisors (see below), whose sum is σ = 79287210. Its totient is φ = 26429068.

The previous prime is 52858087. The next prime is 52858139. The reversal of 52858138 is 83185825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32182929 + 20675209 = 5673^2 + 4547^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 52858138.

It is not an unprimeable number, because it can be changed into a prime (52858139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13214533 + ... + 13214536.

Almost surely, 2^52858138 is an apocalyptic number.

52858138 is a deficient number, since it is larger than the sum of its proper divisors (26429072).

52858138 is a wasteful number, since it uses less digits than its factorization.

52858138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26429071.

The product of its digits is 76800, while the sum is 40.

The square root of 52858138 is about 7270.3602386677. The cubic root of 52858138 is about 375.2931349468.

The spelling of 52858138 in words is "fifty-two million, eight hundred fifty-eight thousand, one hundred thirty-eight".