52155121 has 2 divisors, whose sum is σ = 52155122. Its totient is φ = 52155120.

The previous prime is 52155119. The next prime is 52155143. The reversal of 52155121 is 12155125.

It is a happy number.

It is an a-pointer prime, because the next prime (52155143) can be obtained adding 52155121 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36663025 + 15492096 = 6055^2 + 3936^2 .

It is a cyclic number.

It is not a de Polignac number, because 52155121 - 2¹ = 52155119 is a prime.

Together with 52155119, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 52155092 and 52155101.

It is not a weakly prime, because it can be changed into another prime (52155821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26077560 + 26077561.

It is an arithmetic number, because the mean of its divisors is an integer number (26077561).

Almost surely, 2^52155121 is an apocalyptic number.

It is an amenable number.

52155121 is a deficient number, since it is larger than the sum of its proper divisors (1).

52155121 is an equidigital number, since it uses as much as digits as its factorization.

52155121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 500, while the sum is 22.

The square root of 52155121 is about 7221.8502476858. The cubic root of 52155121 is about 373.6218952246.

The spelling of 52155121 in words is "fifty-two million, one hundred fifty-five thousand, one hundred twenty-one".