50747921 has 16 divisors (see below), whose sum is σ = 60071424. Its totient is φ = 41969664.

The previous prime is 50747909. The next prime is 50747923. The reversal of 50747921 is 12974705.

It is a cyclic number.

It is not a de Polignac number, because 50747921 - 2⁶ = 50747857 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (50747923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22961 + ... + 25073.

It is an arithmetic number, because the mean of its divisors is an integer number (3754464).

Almost surely, 2^50747921 is an apocalyptic number.

It is an amenable number.

50747921 is a deficient number, since it is larger than the sum of its proper divisors (9323503).

50747921 is a wasteful number, since it uses less digits than its factorization.

50747921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 50747921 is about 7123.7575056988. The cubic root of 50747921 is about 370.2309758202.

The spelling of 50747921 in words is "fifty million, seven hundred forty-seven thousand, nine hundred twenty-one".