50921429 has 4 divisors (see below), whose sum is σ = 54838476. Its totient is φ = 47004384.

The previous prime is 50921359. The next prime is 50921447. The reversal of 50921429 is 92412905.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4368100 + 46553329 = 2090^2 + 6823^2 .

It is a cyclic number.

It is not a de Polignac number, because 50921429 - 2¹² = 50917333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50921395 and 50921404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50921459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1958504 + ... + 1958529.

It is an arithmetic number, because the mean of its divisors is an integer number (13709619).

Almost surely, 2^50921429 is an apocalyptic number.

It is an amenable number.

50921429 is a deficient number, since it is larger than the sum of its proper divisors (3917047).

50921429 is a wasteful number, since it uses less digits than its factorization.

50921429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917046.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 50921429 is about 7135.9252378371. The cubic root of 50921429 is about 370.6524378448.

The spelling of 50921429 in words is "fifty million, nine hundred twenty-one thousand, four hundred twenty-nine".