51089610 has 64 divisors (see below), whose sum is σ = 144063360. Its totient is φ = 11431680.

The previous prime is 51089593. The next prime is 51089617. The reversal of 51089610 is 1698015.

It is a happy number.

It is a super-2 number, since 2×51089610² = 5220296499904200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (51089617) 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 31 ways as a sum of consecutive naturals, for example, 1665 + ... + 10244.

It is an arithmetic number, because the mean of its divisors is an integer number (2250990).

Almost surely, 2^51089610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51089610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72031680).

51089610 is an abundant number, since it is smaller than the sum of its proper divisors (92973750).

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

51089610 is a wasteful number, since it uses less digits than its factorization.

51089610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11943.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 51089610 is about 7147.6996299509. The cubic root of 51089610 is about 371.0600474826.

The spelling of 51089610 in words is "fifty-one million, eighty-nine thousand, six hundred ten".