120551 has 2 divisors, whose sum is σ = 120552. Its totient is φ = 120550.

The previous prime is 120539. The next prime is 120557. The reversal of 120551 is 155021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120551 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120557) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60275 + 60276.

It is an arithmetic number, because the mean of its divisors is an integer number (60276).

2¹²⁰⁵⁵¹ is an apocalyptic number.

120551 is a deficient number, since it is larger than the sum of its proper divisors (1).

120551 is an equidigital number, since it uses as much as digits as its factorization.

120551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 120551 is about 347.2045506614. The cubic root of 120551 is about 49.3996197253.

Adding to 120551 its reverse (155021), we get a palindrome (275572).

The spelling of 120551 in words is "one hundred twenty thousand, five hundred fifty-one".