51006072 has 32 divisors (see below), whose sum is σ = 137324880. Its totient is φ = 15694080.

The previous prime is 51006061. The next prime is 51006079. The reversal of 51006072 is 27060015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51006079) by changing a digit.

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, 81429 + ... + 82052.

Almost surely, 2^51006072 is an apocalyptic number.

51006072 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51006072 is an abundant number, since it is smaller than the sum of its proper divisors (86318808).

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

51006072 is a wasteful number, since it uses less digits than its factorization.

51006072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163503 (or 163499 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 51006072 is about 7141.8535409234. The cubic root of 51006072 is about 370.8576937188.

Adding to 51006072 its reverse (27060015), we get a palindrome (78066087).

The spelling of 51006072 in words is "fifty-one million, six thousand, seventy-two".