50666515 has 4 divisors (see below), whose sum is σ = 60799824. Its totient is φ = 40533208.

The previous prime is 50666489. The next prime is 50666519. The reversal of 50666515 is 51566605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51566605 = 5 ⋅10313321.

It is a cyclic number.

It is not a de Polignac number, because 50666515 - 2¹³ = 50658323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50666519) 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, 5066647 + ... + 5066656.

It is an arithmetic number, because the mean of its divisors is an integer number (15199956).

Almost surely, 2^50666515 is an apocalyptic number.

50666515 is a deficient number, since it is larger than the sum of its proper divisors (10133309).

50666515 is a wasteful number, since it uses less digits than its factorization.

50666515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10133308.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 50666515 is about 7118.0415143493. The cubic root of 50666515 is about 370.0329043053.

The spelling of 50666515 in words is "fifty million, six hundred sixty-six thousand, five hundred fifteen".