51658068 has 96 divisors (see below), whose sum is σ = 154441728. Its totient is φ = 13046400.

The previous prime is 51658067. The next prime is 51658081. The reversal of 51658068 is 86085615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51658067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33433 + ... + 34943.

It is an arithmetic number, because the mean of its divisors is an integer number (1608768).

Almost surely, 2^51658068 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 51658068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77220864).

51658068 is an abundant number, since it is smaller than the sum of its proper divisors (102783660).

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

51658068 is a wasteful number, since it uses less digits than its factorization.

51658068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1571 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 51658068 is about 7187.3547289667. The cubic root of 51658068 is about 372.4311972981.

The spelling of 51658068 in words is "fifty-one million, six hundred fifty-eight thousand, sixty-eight".