50166621 has 12 divisors (see below), whose sum is σ = 75147072. Its totient is φ = 33444252.

The previous prime is 50166619. The next prime is 50166653. The reversal of 50166621 is 12666105.

It is a happy number.

It is not a de Polignac number, because 50166621 - 2¹ = 50166619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50166601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102981 + ... + 103466.

It is an arithmetic number, because the mean of its divisors is an integer number (6262256).

Almost surely, 2^50166621 is an apocalyptic number.

It is an amenable number.

50166621 is a deficient number, since it is larger than the sum of its proper divisors (24980451).

50166621 is an equidigital number, since it uses as much as digits as its factorization.

50166621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206462 (or 206450 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 50166621 is about 7082.8398965387. The cubic root of 50166621 is about 368.8119208091.

The spelling of 50166621 in words is "fifty million, one hundred sixty-six thousand, six hundred twenty-one".