51269760 has 320 divisors, whose sum is σ = 195497280. Its totient is φ = 12773376.

The previous prime is 51269749. The next prime is 51269791. The reversal of 51269760 is 6796215.

It is a tau number, because it is divible by the number of its divisors (320).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1192299 + ... + 1192341.

It is an arithmetic number, because the mean of its divisors is an integer number (610929).

Almost surely, 2^51269760 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 51269760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97748640).

51269760 is an abundant number, since it is smaller than the sum of its proper divisors (144227520).

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

51269760 is a wasteful number, since it uses less digits than its factorization.

51269760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 51269760 is about 7160.2904969002. The cubic root of 51269760 is about 371.4956745486.

The spelling of 51269760 in words is "fifty-one million, two hundred sixty-nine thousand, seven hundred sixty".