51848557 has 4 divisors (see below), whose sum is σ = 51873696. Its totient is φ = 51823420.

The previous prime is 51848543. The next prime is 51848561. The reversal of 51848557 is 75584815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51848557 - 2⁷ = 51848429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51848527) 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, 9169 + ... + 13702.

It is an arithmetic number, because the mean of its divisors is an integer number (12968424).

Almost surely, 2^51848557 is an apocalyptic number.

It is an amenable number.

51848557 is a deficient number, since it is larger than the sum of its proper divisors (25139).

51848557 is a wasteful number, since it uses less digits than its factorization.

51848557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25138.

The product of its digits is 224000, while the sum is 43.

The square root of 51848557 is about 7200.5942115912. The cubic root of 51848557 is about 372.8884154720. Note that the first 3 decimals are identical.

The spelling of 51848557 in words is "fifty-one million, eight hundred forty-eight thousand, five hundred fifty-seven".