51040650 has 48 divisors (see below), whose sum is σ = 133250400. Its totient is φ = 12893760.

The previous prime is 51040607. The next prime is 51040727. The reversal of 51040650 is 5604015.

It is a happy number.

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 23 ways as a sum of consecutive naturals, for example, 6105 + ... + 11804.

It is an arithmetic number, because the mean of its divisors is an integer number (2776050).

Almost surely, 2^51040650 is an apocalyptic number.

51040650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51040650 is an abundant number, since it is smaller than the sum of its proper divisors (82209750).

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

51040650 is a wasteful number, since it uses less digits than its factorization.

51040650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17943 (or 17938 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51040650 is about 7144.2739309184. The cubic root of 51040650 is about 370.9414786497.

Adding to 51040650 its reverse (5604015), we get a palindrome (56644665).

The spelling of 51040650 in words is "fifty-one million, forty thousand, six hundred fifty".