51396270 has 64 divisors (see below), whose sum is σ = 131569920. Its totient is φ = 12804608.

The previous prime is 51396269. The next prime is 51396299. The reversal of 51396270 is 7269315.

51396270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91009 + ... + 91571.

It is an arithmetic number, because the mean of its divisors is an integer number (2055780).

Almost surely, 2^51396270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51396270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65784960).

51396270 is an abundant number, since it is smaller than the sum of its proper divisors (80173650).

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

51396270 is a wasteful number, since it uses less digits than its factorization.

51396270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 51396270 is about 7169.1191927600. The cubic root of 51396270 is about 371.8009832681.

The spelling of 51396270 in words is "fifty-one million, three hundred ninety-six thousand, two hundred seventy".