50000066 has 4 divisors (see below), whose sum is σ = 75000102. Its totient is φ = 25000032.

The previous prime is 50000063. The next prime is 50000101. The reversal of 50000066 is 66000005.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66000005 = 5 ⋅13200001.

It can be written as a sum of positive squares in only one way, i.e., 29106025 + 20894041 = 5395^2 + 4571^2 .

50000066 is a modest number, since divided by 66 gives 50 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 49999999 and 50000053.

It is not an unprimeable number, because it can be changed into a prime (50000063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500015 + ... + 12500018.

Almost surely, 2^50000066 is an apocalyptic number.

50000066 is a deficient number, since it is larger than the sum of its proper divisors (25000036).

50000066 is a wasteful number, since it uses less digits than its factorization.

50000066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000035.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 50000066 is about 7071.0724787687. The cubic root of 50000066 is about 368.4033119614.

The spelling of 50000066 in words is "fifty million, sixty-six", and thus it is an aban number, an eban number, and an uban number.