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2555989 is a prime number
BaseRepresentation
bin1001110000000001010101
311210212011021
421300001111
51123242424
6130441141
730503602
oct11600125
94725137
102555989
111496397
12a331b1
136b6527
144a76a9
153574e4
hex270055

2555989 has 2 divisors, whose sum is σ = 2555990. Its totient is φ = 2555988.

The previous prime is 2555957. The next prime is 2556011. The reversal of 2555989 is 9895552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2528100 + 27889 = 1590^2 + 167^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555989 - 25 = 2555957 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277994 + 1277995.

It is an arithmetic number, because the mean of its divisors is an integer number (1277995).

22555989 is an apocalyptic number.

It is an amenable number.

2555989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555989 is an equidigital number, since it uses as much as digits as its factorization.

2555989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 43.

The square root of 2555989 is about 1598.7460711445. The cubic root of 2555989 is about 136.7265934559.

The spelling of 2555989 in words is "two million, five hundred fifty-five thousand, nine hundred eighty-nine".