50550121 has 2 divisors, whose sum is σ = 50550122. Its totient is φ = 50550120.

The previous prime is 50550107. The next prime is 50550133. The reversal of 50550121 is 12105505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42771600 + 7778521 = 6540^2 + 2789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50550121 is a prime.

It is a super-2 number, since 2×50550121² = 5110629466229282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50550221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25275060 + 25275061.

It is an arithmetic number, because the mean of its divisors is an integer number (25275061).

Almost surely, 2^50550121 is an apocalyptic number.

It is an amenable number.

50550121 is a deficient number, since it is larger than the sum of its proper divisors (1).

50550121 is an equidigital number, since it uses as much as digits as its factorization.

50550121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 50550121 is about 7109.8608284551. The cubic root of 50550121 is about 369.7493335046.

Adding to 50550121 its reverse (12105505), we get a palindrome (62655626).

The spelling of 50550121 in words is "fifty million, five hundred fifty thousand, one hundred twenty-one".