51057238 has 4 divisors (see below), whose sum is σ = 76585860. Its totient is φ = 25528618.

The previous prime is 51057229. The next prime is 51057241. The reversal of 51057238 is 83275015.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12764308 + ... + 12764311.

It is an arithmetic number, because the mean of its divisors is an integer number (19146465).

Almost surely, 2^51057238 is an apocalyptic number.

51057238 is a deficient number, since it is larger than the sum of its proper divisors (25528622).

51057238 is a wasteful number, since it uses less digits than its factorization.

51057238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25528621.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 51057238 is about 7145.4347663386. The cubic root of 51057238 is about 370.9816591122.

The spelling of 51057238 in words is "fifty-one million, fifty-seven thousand, two hundred thirty-eight".