50691312 has 80 divisors (see below), whose sum is σ = 166298880. Its totient is φ = 14482368.

The previous prime is 50691307. The next prime is 50691317. The reversal of 50691312 is 21319605.

50691312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (50691307) and next prime (50691317).

It is a super-2 number, since 2×50691312² = 5139218224562688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50691317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5358 + ... + 11405.

It is an arithmetic number, because the mean of its divisors is an integer number (2078736).

Almost surely, 2^50691312 is an apocalyptic number.

It is an amenable number.

50691312 is an abundant number, since it is smaller than the sum of its proper divisors (115607568).

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

50691312 is a wasteful number, since it uses less digits than its factorization.

50691312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16787 (or 16775 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 50691312 is about 7119.7831427650. The cubic root of 50691312 is about 370.0932611269.

The spelling of 50691312 in words is "fifty million, six hundred ninety-one thousand, three hundred twelve".