51051392 has 64 divisors (see below), whose sum is σ = 117210240. Its totient is φ = 21696000.

The previous prime is 51051383. The next prime is 51051401. The reversal of 51051392 is 29315015.

It is an interprime number because it is at equal distance from previous prime (51051383) and next prime (51051401).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203267 + ... + 203517.

It is an arithmetic number, because the mean of its divisors is an integer number (1831410).

Almost surely, 2^51051392 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 51051392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58605120).

51051392 is an abundant number, since it is smaller than the sum of its proper divisors (66158848).

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

51051392 is a wasteful number, since it uses less digits than its factorization.

51051392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 51051392 is about 7145.0256822492. The cubic root of 51051392 is about 370.9674995687.

The spelling of 51051392 in words is "fifty-one million, fifty-one thousand, three hundred ninety-two".