50643551 has 16 divisors (see below), whose sum is σ = 59524608. Its totient is φ = 42184800.

The previous prime is 50643511. The next prime is 50643559. The reversal of 50643551 is 15534605.

It is not a de Polignac number, because 50643551 - 2¹⁴ = 50627167 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50643559) 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, 93341 + ... + 93881.

It is an arithmetic number, because the mean of its divisors is an integer number (3720288).

Almost surely, 2^50643551 is an apocalyptic number.

50643551 is a deficient number, since it is larger than the sum of its proper divisors (8881057).

50643551 is a wasteful number, since it uses less digits than its factorization.

50643551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 50643551 is about 7116.4282473724. The cubic root of 50643551 is about 369.9769915081.

The spelling of 50643551 in words is "fifty million, six hundred forty-three thousand, five hundred fifty-one".