2355121 has 2 divisors, whose sum is σ = 2355122. Its totient is φ = 2355120.

The previous prime is 2355113. The next prime is 2355137. The reversal of 2355121 is 1215532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 505521 = 1360^2 + 711^2 .

It is a cyclic number.

It is not a de Polignac number, because 2355121 - 2³ = 2355113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2355151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177560 + 1177561.

It is an arithmetic number, because the mean of its divisors is an integer number (1177561).

2^2355121 is an apocalyptic number.

It is an amenable number.

2355121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2355121 is an equidigital number, since it uses as much as digits as its factorization.

2355121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 300, while the sum is 19.

The square root of 2355121 is about 1534.6403487462. The cubic root of 2355121 is about 133.0467922867.

It can be divided in two parts, 235 and 5121, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 2355121 in words is "two million, three hundred fifty-five thousand, one hundred twenty-one".