50990742 has 32 divisors (see below), whose sum is σ = 123615360. Its totient is φ = 15451560.

The previous prime is 50990741. The next prime is 50990767. The reversal of 50990742 is 24709905.

It is a junction number, because it is equal to n+sod(n) for n = 50990697 and 50990706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50990741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42328 + ... + 43515.

It is an arithmetic number, because the mean of its divisors is an integer number (3862980).

Almost surely, 2^50990742 is an apocalyptic number.

50990742 is an abundant number, since it is smaller than the sum of its proper divisors (72624618).

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

50990742 is a wasteful number, since it uses less digits than its factorization.

50990742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85865 (or 85859 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 50990742 is about 7140.7802094729. The cubic root of 50990742 is about 370.8205359328.

The spelling of 50990742 in words is "fifty million, nine hundred ninety thousand, seven hundred forty-two".