51857441 has 8 divisors (see below), whose sum is σ = 55857120. Its totient is φ = 47984832.

The previous prime is 51857437. The next prime is 51857453. The reversal of 51857441 is 14475815.

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

It is a cyclic number.

It is not a de Polignac number, because 51857441 - 2² = 51857437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51857431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30920 + ... + 32553.

It is an arithmetic number, because the mean of its divisors is an integer number (6982140).

Almost surely, 2^51857441 is an apocalyptic number.

It is an amenable number.

51857441 is a deficient number, since it is larger than the sum of its proper divisors (3999679).

51857441 is a wasteful number, since it uses less digits than its factorization.

51857441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63535.

The product of its digits is 22400, while the sum is 35.

The square root of 51857441 is about 7201.2110787006. The cubic root of 51857441 is about 372.9097117991.

The spelling of 51857441 in words is "fifty-one million, eight hundred fifty-seven thousand, four hundred forty-one".