51292992 has 56 divisors (see below), whose sum is σ = 136241536. Its totient is φ = 17031168.

The previous prime is 51292991. The next prime is 51292993. The reversal of 51292992 is 29929215.

It is an interprime number because it is at equal distance from previous prime (51292991) and next prime (51292993).

It is a self number, because there is not a number n which added to its sum of digits gives 51292992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51292991) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 88608 + ... + 89184.

Almost surely, 2^51292992 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 51292992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68120768).

51292992 is an abundant number, since it is smaller than the sum of its proper divisors (84948544).

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

51292992 is a wasteful number, since it uses less digits than its factorization.

51292992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055 (or 1045 counting only the distinct ones).

The product of its digits is 29160, while the sum is 39.

The square root of 51292992 is about 7161.9125937141. The cubic root of 51292992 is about 371.5517783431.

The spelling of 51292992 in words is "fifty-one million, two hundred ninety-two thousand, nine hundred ninety-two".