51289190 has 16 divisors (see below), whose sum is σ = 95299200. Its totient is φ = 19853760.

The previous prime is 51289129. The next prime is 51289201. The reversal of 51289190 is 9198215.

51289190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51289190² = 5261162021712200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51289190.

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 7 ways as a sum of consecutive naturals, for example, 82415 + ... + 83034.

It is an arithmetic number, because the mean of its divisors is an integer number (5956200).

Almost surely, 2^51289190 is an apocalyptic number.

51289190 is a deficient number, since it is larger than the sum of its proper divisors (44010010).

51289190 is a wasteful number, since it uses less digits than its factorization.

51289190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165487.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 51289190 is about 7161.6471569046. The cubic root of 51289190 is about 371.5425979157.

The spelling of 51289190 in words is "fifty-one million, two hundred eighty-nine thousand, one hundred ninety".