51813028 has 24 divisors (see below), whose sum is σ = 93993984. Its totient is φ = 24964800.

The previous prime is 51813023. The next prime is 51813037. The reversal of 51813028 is 82031815.

It is a junction number, because it is equal to n+sod(n) for n = 51812987 and 51813005.

It is not an unprimeable number, because it can be changed into a prime (51813023) 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, 34101 + ... + 35587.

It is an arithmetic number, because the mean of its divisors is an integer number (3916416).

Almost surely, 2^51813028 is an apocalyptic number.

It is an amenable number.

51813028 is a deficient number, since it is larger than the sum of its proper divisors (42180956).

51813028 is a wasteful number, since it uses less digits than its factorization.

51813028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 51813028 is about 7198.1267007465. The cubic root of 51813028 is about 372.8032226170.

The spelling of 51813028 in words is "fifty-one million, eight hundred thirteen thousand, twenty-eight".