51049983 has 4 divisors (see below), whose sum is σ = 68066648. Its totient is φ = 34033320.

The previous prime is 51049981. The next prime is 51050009. The reversal of 51049983 is 38994015.

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

It is not a de Polignac number, because 51049983 - 2¹ = 51049981 is a prime.

It is a super-2 number, since 2×51049983² = 5212201528600578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51049981) 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, 8508328 + ... + 8508333.

It is an arithmetic number, because the mean of its divisors is an integer number (17016662).

Almost surely, 2^51049983 is an apocalyptic number.

51049983 is a deficient number, since it is larger than the sum of its proper divisors (17016665).

51049983 is a wasteful number, since it uses less digits than its factorization.

51049983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17016664.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 51049983 is about 7144.9270815034. The cubic root of 51049983 is about 370.9640866809.

The spelling of 51049983 in words is "fifty-one million, forty-nine thousand, nine hundred eighty-three".