51097392 has 100 divisors (see below), whose sum is σ = 149889960. Its totient is φ = 16803072.

The previous prime is 51097381. The next prime is 51097471. The reversal of 51097392 is 29379015.

51097392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51097392² = 5221886938403328, which contains 22 as substring.

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

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 19 ways as a sum of consecutive naturals, for example, 115123 + ... + 115565.

Almost surely, 2^51097392 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 51097392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74944980).

51097392 is an abundant number, since it is smaller than the sum of its proper divisors (98792568).

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

51097392 is a wasteful number, since it uses less digits than its factorization.

51097392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 51097392 is about 7148.2439801674. The cubic root of 51097392 is about 371.0788865556.

The spelling of 51097392 in words is "fifty-one million, ninety-seven thousand, three hundred ninety-two".