51320046 has 16 divisors (see below), whose sum is σ = 102766464. Its totient is φ = 17085624.

The previous prime is 51320041. The next prime is 51320047. The reversal of 51320046 is 64002315.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51320041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501 + ... + 10143.

It is an arithmetic number, because the mean of its divisors is an integer number (6422904).

Almost surely, 2^51320046 is an apocalyptic number.

51320046 is an abundant number, since it is smaller than the sum of its proper divisors (51446418).

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

51320046 is a wasteful number, since it uses less digits than its factorization.

51320046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10535.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 51320046 is about 7163.8010860157. The cubic root of 51320046 is about 371.6170906770.

The spelling of 51320046 in words is "fifty-one million, three hundred twenty thousand, forty-six".