51701216 has 48 divisors (see below), whose sum is σ = 123179616. Its totient is φ = 20852736.

The previous prime is 51701161. The next prime is 51701227. The reversal of 51701216 is 61210715.

It is a junction number, because it is equal to n+sod(n) for n = 51701191 and 51701200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2981 + ... + 10596.

It is an arithmetic number, because the mean of its divisors is an integer number (2566242).

Almost surely, 2^51701216 is an apocalyptic number.

51701216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51701216 is an abundant number, since it is smaller than the sum of its proper divisors (71478400).

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

51701216 is a wasteful number, since it uses less digits than its factorization.

51701216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13611 (or 13603 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 51701216 is about 7190.3557631038. The cubic root of 51701216 is about 372.5348609327.

The spelling of 51701216 in words is "fifty-one million, seven hundred one thousand, two hundred sixteen".