51028444 has 24 divisors (see below), whose sum is σ = 95356800. Its totient is φ = 23835504.

The previous prime is 51028409. The next prime is 51028447. The reversal of 51028444 is 44482015.

It is a super-2 number, since 2×51028444² = 5207804194122272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51028447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2494 + ... + 10405.

It is an arithmetic number, because the mean of its divisors is an integer number (3973200).

Almost surely, 2^51028444 is an apocalyptic number.

It is an amenable number.

51028444 is a deficient number, since it is larger than the sum of its proper divisors (44328356).

51028444 is a wasteful number, since it uses less digits than its factorization.

51028444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12969 (or 12967 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 51028444 is about 7143.4196292812. The cubic root of 51028444 is about 370.9119069739.

The spelling of 51028444 in words is "fifty-one million, twenty-eight thousand, four hundred forty-four".