20051258 has 8 divisors (see below), whose sum is σ = 30387252. Its totient is φ = 9922176.

The previous prime is 20051257. The next prime is 20051263. The reversal of 20051258 is 85215002.

It can be written as a sum of positive squares in 2 ways, for example, as 19598329 + 452929 = 4427^2 + 673^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20051257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51485 + ... + 51872.

Almost surely, 2^20051258 is an apocalyptic number.

20051258 is a deficient number, since it is larger than the sum of its proper divisors (10335994).

20051258 is a wasteful number, since it uses less digits than its factorization.

20051258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103456.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 20051258 is about 4477.8631064382. The cubic root of 20051258 is about 271.6734565321.

The spelling of 20051258 in words is "twenty million, fifty-one thousand, two hundred fifty-eight".