51435396 has 72 divisors (see below), whose sum is σ = 134534400. Its totient is φ = 16559424.

The previous prime is 51435389. The next prime is 51435403. The reversal of 51435396 is 69353415.

51435396 is a `hidden beast` number, since 514 + 3 + 53 + 96 = 666.

It is an interprime number because it is at equal distance from previous prime (51435389) and next prime (51435403).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51435396.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230541 + ... + 230763.

Almost surely, 2^51435396 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 51435396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67267200).

51435396 is an abundant number, since it is smaller than the sum of its proper divisors (83099004).

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

51435396 is a wasteful number, since it uses less digits than its factorization.

51435396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 420 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 51435396 is about 7171.8474607314. The cubic root of 51435396 is about 371.8953052585.

The spelling of 51435396 in words is "fifty-one million, four hundred thirty-five thousand, three hundred ninety-six".