51489088 has 112 divisors (see below), whose sum is σ = 128747520. Its totient is φ = 19920384.

The previous prime is 51489083. The next prime is 51489101. The reversal of 51489088 is 88098415.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×51489088² = 5302252366143488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51489083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195645 + ... + 195907.

Almost surely, 2^51489088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51489088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64373760).

51489088 is an abundant number, since it is smaller than the sum of its proper divisors (77258432).

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

51489088 is a wasteful number, since it uses less digits than its factorization.

51489088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 51489088 is about 7175.5897318618. The cubic root of 51489088 is about 372.0246640293.

The spelling of 51489088 in words is "fifty-one million, four hundred eighty-nine thousand, eighty-eight".