252158026 has 4 divisors (see below), whose sum is σ = 378237042. Its totient is φ = 126079012.

The previous prime is 252158017. The next prime is 252158029. The reversal of 252158026 is 620851252.

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., 189035001 + 63123025 = 13749^2 + 7945^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (252158029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63039505 + ... + 63039508.

Almost surely, 2^252158026 is an apocalyptic number.

252158026 is a deficient number, since it is larger than the sum of its proper divisors (126079016).

252158026 is a wasteful number, since it uses less digits than its factorization.

252158026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126079015.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 252158026 is about 15879.4844374747. The cubic root of 252158026 is about 631.7679624736.

The spelling of 252158026 in words is "two hundred fifty-two million, one hundred fifty-eight thousand, twenty-six".