51019238 has 4 divisors (see below), whose sum is σ = 76528860. Its totient is φ = 25509618.

The previous prime is 51019229. The next prime is 51019289. The reversal of 51019238 is 83291015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83291015 = 5 ⋅16658203.

It is a super-2 number, since 2×51019238² = 5205925292201288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51019238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12754808 + ... + 12754811.

It is an arithmetic number, because the mean of its divisors is an integer number (19132215).

Almost surely, 2^51019238 is an apocalyptic number.

51019238 is a deficient number, since it is larger than the sum of its proper divisors (25509622).

51019238 is a wasteful number, since it uses less digits than its factorization.

51019238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25509621.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 51019238 is about 7142.7752309589. The cubic root of 51019238 is about 370.8896003274.

The spelling of 51019238 in words is "fifty-one million, nineteen thousand, two hundred thirty-eight".