51039500 has 24 divisors (see below), whose sum is σ = 111471360. Its totient is φ = 20415600.

The previous prime is 51039481. The next prime is 51039517. The reversal of 51039500 is 593015.

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 in 7 ways as a sum of consecutive naturals, for example, 50540 + ... + 51539.

It is an arithmetic number, because the mean of its divisors is an integer number (4644640).

Almost surely, 2^51039500 is an apocalyptic number.

51039500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51039500 is an abundant number, since it is smaller than the sum of its proper divisors (60431860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51039500 is a wasteful number, since it uses less digits than its factorization.

51039500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102098 (or 102086 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 51039500 is about 7144.1934464291. The cubic root of 51039500 is about 370.9386927270.

The spelling of 51039500 in words is "fifty-one million, thirty-nine thousand, five hundred".