51358238 has 8 divisors (see below), whose sum is σ = 77383488. Its totient is φ = 25563744.

The previous prime is 51358189. The next prime is 51358243. The reversal of 51358238 is 83285315.

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

It is a super-2 number, since 2×51358238² = 5275337220929288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51358198 and 51358207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57131 + ... + 58022.

It is an arithmetic number, because the mean of its divisors is an integer number (9672936).

Almost surely, 2^51358238 is an apocalyptic number.

51358238 is a deficient number, since it is larger than the sum of its proper divisors (26025250).

51358238 is a wasteful number, since it uses less digits than its factorization.

51358238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115378.

The product of its digits is 28800, while the sum is 35.

The square root of 51358238 is about 7166.4662142509. The cubic root of 51358238 is about 371.7092527187.

The spelling of 51358238 in words is "fifty-one million, three hundred fifty-eight thousand, two hundred thirty-eight".