51170880 has 112 divisors (see below), whose sum is σ = 164006784. Its totient is φ = 13516800.

The previous prime is 51170879. The next prime is 51170881. The reversal of 51170880 is 8807115.

It is an interprime number because it is at equal distance from previous prime (51170879) and next prime (51170881).

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 (51170881) 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, 144784 + ... + 145136.

Almost surely, 2^51170880 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 51170880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82003392).

51170880 is an abundant number, since it is smaller than the sum of its proper divisors (112835904).

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

51170880 is a wasteful number, since it uses less digits than its factorization.

51170880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 51170880 is about 7153.3824167313. The cubic root of 51170880 is about 371.2566959080.

Adding to 51170880 its reverse (8807115), we get a palindrome (59977995).

The spelling of 51170880 in words is "fifty-one million, one hundred seventy thousand, eight hundred eighty".