50161440 has 96 divisors (see below), whose sum is σ = 180593280. Its totient is φ = 11464704.

The previous prime is 50161427. The next prime is 50161469. The reversal of 50161440 is 4416105.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4105 + ... + 10824.

It is an arithmetic number, because the mean of its divisors is an integer number (1881180).

Almost surely, 2^50161440 is an apocalyptic number.

It is an amenable number.

50161440 is an abundant number, since it is smaller than the sum of its proper divisors (130431840).

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

50161440 is a wasteful number, since it uses less digits than its factorization.

50161440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14954 (or 14946 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 50161440 is about 7082.4741439697. The cubic root of 50161440 is about 368.7992239182.

Adding to 50161440 its reverse (4416105), we get a palindrome (54577545).

The spelling of 50161440 in words is "fifty million, one hundred sixty-one thousand, four hundred forty".