51142016 has 32 divisors (see below), whose sum is σ = 104064480. Its totient is φ = 25024000.

The previous prime is 51141997. The next prime is 51142019. The reversal of 51142016 is 61024115.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51142019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766 + ... + 10266.

It is an arithmetic number, because the mean of its divisors is an integer number (3252015).

Almost surely, 2^51142016 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 51142016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52032240).

51142016 is an abundant number, since it is smaller than the sum of its proper divisors (52922464).

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

51142016 is an equidigital number, since it uses as much as digits as its factorization.

51142016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8562 (or 8550 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 51142016 is about 7151.3646250209. The cubic root of 51142016 is about 371.1868777565.

The spelling of 51142016 in words is "fifty-one million, one hundred forty-two thousand, sixteen".