51029772 has 12 divisors (see below), whose sum is σ = 119069496. Its totient is φ = 17009920.

The previous prime is 51029747. The next prime is 51029773. The reversal of 51029772 is 27792015.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51029773) 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 3 ways as a sum of consecutive naturals, for example, 2126229 + ... + 2126252.

It is an arithmetic number, because the mean of its divisors is an integer number (9922458).

Almost surely, 2^51029772 is an apocalyptic number.

It is an amenable number.

51029772 is an abundant number, since it is smaller than the sum of its proper divisors (68039724).

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

51029772 is a wasteful number, since it uses less digits than its factorization.

51029772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252488 (or 4252486 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 51029772 is about 7143.5125813566. The cubic root of 51029772 is about 370.9151245698.

The spelling of 51029772 in words is "fifty-one million, twenty-nine thousand, seven hundred seventy-two".