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5051989 is a prime number
BaseRepresentation
bin10011010001011001010101
3100111200000201
4103101121111
52243130424
6300140501
760640555
oct23213125
910450021
105051989
1129406a8
121837731
13107b657
14957165
1569bd44
hex4d1655

5051989 has 2 divisors, whose sum is σ = 5051990. Its totient is φ = 5051988.

The previous prime is 5051987. The next prime is 5051999. The reversal of 5051989 is 9891505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4915089 + 136900 = 2217^2 + 370^2 .

It is a cyclic number.

It is not a de Polignac number, because 5051989 - 21 = 5051987 is a prime.

It is a super-2 number, since 2×50519892 = 51045185712242, which contains 22 as substring.

Together with 5051987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5051987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525994 + 2525995.

It is an arithmetic number, because the mean of its divisors is an integer number (2525995).

Almost surely, 25051989 is an apocalyptic number.

It is an amenable number.

5051989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5051989 is an equidigital number, since it uses as much as digits as its factorization.

5051989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 37.

The square root of 5051989 is about 2247.6630085491. The cubic root of 5051989 is about 171.5882185734.

The spelling of 5051989 in words is "five million, fifty-one thousand, nine hundred eighty-nine".