51471288 has 192 divisors, whose sum is σ = 165110400. Its totient is φ = 14878080.

The previous prime is 51471239. The next prime is 51471289. The reversal of 51471288 is 88217415.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (17920) is a multiple of the sum of its prime divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51471289) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 620095 + ... + 620177.

It is an arithmetic number, because the mean of its divisors is an integer number (859950).

Almost surely, 2^51471288 is an apocalyptic number.

51471288 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51471288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82555200).

51471288 is an abundant number, since it is smaller than the sum of its proper divisors (113639112).

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

51471288 is a wasteful number, since it uses less digits than its factorization.

51471288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 128 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 51471288 is about 7174.3493084739. The cubic root of 51471288 is about 371.9817889108.

The spelling of 51471288 in words is "fifty-one million, four hundred seventy-one thousand, two hundred eighty-eight".