50133440 has 56 divisors (see below), whose sum is σ = 136440672. Its totient is φ = 17187840.

The previous prime is 50133427. The next prime is 50133451. The reversal of 50133440 is 4433105.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-3 number, since 3×50133440³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8951 + ... + 13430.

Almost surely, 2^50133440 is an apocalyptic number.

It is an amenable number.

50133440 is an abundant number, since it is smaller than the sum of its proper divisors (86307232).

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

50133440 is a wasteful number, since it uses less digits than its factorization.

50133440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22405 (or 22395 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 50133440 is about 7080.4971576860. The cubic root of 50133440 is about 368.7305901878.

Adding to 50133440 its reverse (4433105), we get a palindrome (54566545).

The spelling of 50133440 in words is "fifty million, one hundred thirty-three thousand, four hundred forty".