51694016 has 56 divisors (see below), whose sum is σ = 113208816. Its totient is φ = 23224320.

The previous prime is 51694009. The next prime is 51694021. The reversal of 51694016 is 61049615.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 67910 + ... + 68666.

It is an arithmetic number, because the mean of its divisors is an integer number (2021586).

Almost surely, 2^51694016 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 51694016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56604408).

51694016 is an abundant number, since it is smaller than the sum of its proper divisors (61514800).

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

51694016 is a wasteful number, since it uses less digits than its factorization.

51694016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 51694016 is about 7189.8550750345. The cubic root of 51694016 is about 372.5175668487.

The spelling of 51694016 in words is "fifty-one million, six hundred ninety-four thousand, sixteen".