51283939 has 12 divisors (see below), whose sum is σ = 60501168. Its totient is φ = 43335600.

The previous prime is 51283933. The next prime is 51283949. The reversal of 51283939 is 93938215.

It is not a de Polignac number, because 51283939 - 2¹⁷ = 51152867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51283933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3892 + ... + 10849.

It is an arithmetic number, because the mean of its divisors is an integer number (5041764).

Almost surely, 2^51283939 is an apocalyptic number.

51283939 is a deficient number, since it is larger than the sum of its proper divisors (9217229).

51283939 is a wasteful number, since it uses less digits than its factorization.

51283939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14826 (or 14819 counting only the distinct ones).

The product of its digits is 58320, while the sum is 40.

The square root of 51283939 is about 7161.2805419143. The cubic root of 51283939 is about 371.5299179418.

The spelling of 51283939 in words is "fifty-one million, two hundred eighty-three thousand, nine hundred thirty-nine".