50966640 has 120 divisors (see below), whose sum is σ = 173747808. Its totient is φ = 13386240.

The previous prime is 50966639. The next prime is 50966693. The reversal of 50966640 is 4666905.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a junction number, because it is equal to n+sod(n) for n = 50966595 and 50966604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50622 + ... + 51618.

Almost surely, 2^50966640 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 50966640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86873904).

50966640 is an abundant number, since it is smaller than the sum of its proper divisors (122781168).

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

50966640 is a wasteful number, since it uses less digits than its factorization.

50966640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 50966640 is about 7139.0923792874. The cubic root of 50966640 is about 370.7621009781.

The spelling of 50966640 in words is "fifty million, nine hundred sixty-six thousand, six hundred forty".