50778069 has 4 divisors (see below), whose sum is σ = 67704096. Its totient is φ = 33852044.

The previous prime is 50778061. The next prime is 50778113. The reversal of 50778069 is 96087705.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50778069 - 2³ = 50778061 is a prime.

It is a super-2 number, since 2×50778069² = 5156824582737522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50778069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50778061) 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, 8463009 + ... + 8463014.

It is an arithmetic number, because the mean of its divisors is an integer number (16926024).

Almost surely, 2^50778069 is an apocalyptic number.

It is an amenable number.

50778069 is a deficient number, since it is larger than the sum of its proper divisors (16926027).

50778069 is a wasteful number, since it uses less digits than its factorization.

50778069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16926026.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 50778069 is about 7125.8732096495. The cubic root of 50778069 is about 370.3042761228.

The spelling of 50778069 in words is "fifty million, seven hundred seventy-eight thousand, sixty-nine".