50971440 has 240 divisors, whose sum is σ = 186175584. Its totient is φ = 11427840.

The previous prime is 50971429. The next prime is 50971441. The reversal of 50971440 is 4417905.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 50971398 and 50971407.

It is not an unprimeable number, because it can be changed into a prime (50971441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1644225 + ... + 1644255.

Almost surely, 2^50971440 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 50971440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93087792).

50971440 is an abundant number, since it is smaller than the sum of its proper divisors (135204144).

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

50971440 is a wasteful number, since it uses less digits than its factorization.

50971440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 50971440 is about 7139.4285485605. The cubic root of 50971440 is about 370.7737399784.

The spelling of 50971440 in words is "fifty million, nine hundred seventy-one thousand, four hundred forty".