50351640 has 32 divisors (see below), whose sum is σ = 151055280. Its totient is φ = 13427072.

The previous prime is 50351629. The next prime is 50351647. The reversal of 50351640 is 4615305.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 50351640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50351647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209679 + ... + 209918.

Almost surely, 2^50351640 is an apocalyptic number.

It is an amenable number.

50351640 is an abundant number, since it is smaller than the sum of its proper divisors (100703640).

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

50351640 is a wasteful number, since it uses less digits than its factorization.

50351640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419611 (or 419607 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 50351640 is about 7095.8889506530. Note that the first 3 decimals coincide. The cubic root of 50351640 is about 369.2647683703.

Adding to 50351640 its reverse (4615305), we get a palindrome (54966945).

The spelling of 50351640 in words is "fifty million, three hundred fifty-one thousand, six hundred forty".