51699028 has 12 divisors (see below), whose sum is σ = 90547380. Its totient is φ = 25828352.

The previous prime is 51699017. The next prime is 51699031. The reversal of 51699028 is 82099615.

51699028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 976144 + 50722884 = 988^2 + 7122^2 .

It is a super-2 number, since 2×51699028² = 5345578992289568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050 + ... + 10222.

It is an arithmetic number, because the mean of its divisors is an integer number (7545615).

Almost surely, 2^51699028 is an apocalyptic number.

It is an amenable number.

51699028 is a deficient number, since it is larger than the sum of its proper divisors (38848352).

51699028 is a wasteful number, since it uses less digits than its factorization.

51699028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10586 (or 10584 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 51699028 is about 7190.2036132505. The cubic root of 51699028 is about 372.5296056226.

The spelling of 51699028 in words is "fifty-one million, six hundred ninety-nine thousand, twenty-eight".