51701280 has 96 divisors (see below), whose sum is σ = 171460800. Its totient is φ = 13059072.

The previous prime is 51701249. The next prime is 51701303. The reversal of 51701280 is 8210715.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51701280.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6286 + ... + 11954.

It is an arithmetic number, because the mean of its divisors is an integer number (1786050).

Almost surely, 2^51701280 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 51701280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85730400).

51701280 is an abundant number, since it is smaller than the sum of its proper divisors (119759520).

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

51701280 is a wasteful number, since it uses less digits than its factorization.

51701280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5706 (or 5698 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 51701280 is about 7190.3602135081. The cubic root of 51701280 is about 372.5350146507.

Adding to 51701280 its reverse (8210715), we get a palindrome (59911995).

The spelling of 51701280 in words is "fifty-one million, seven hundred one thousand, two hundred eighty".