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45980281 is a prime number
BaseRepresentation
bin1010111101100…
…1101001111001
310012112001002101
42233121221321
543232332111
64321303401
71065553204
oct257315171
9105461071
1045980281
1123a55736
1213494b61
1396ab889
14616c93b
154083bc1
hex2bd9a79

45980281 has 2 divisors, whose sum is σ = 45980282. Its totient is φ = 45980280.

The previous prime is 45980279. The next prime is 45980303. The reversal of 45980281 is 18208954.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45968400 + 11881 = 6780^2 + 109^2 .

It is a cyclic number.

It is not a de Polignac number, because 45980281 - 21 = 45980279 is a prime.

It is a super-2 number, since 2×459802812 = 4228372481677922, which contains 22 as substring.

Together with 45980279, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 45980281.

It is not a weakly prime, because it can be changed into another prime (45980251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22990140 + 22990141.

It is an arithmetic number, because the mean of its divisors is an integer number (22990141).

Almost surely, 245980281 is an apocalyptic number.

45980281 is the 3033-rd centered decagonal number.

It is an amenable number.

45980281 is a deficient number, since it is larger than the sum of its proper divisors (1).

45980281 is an equidigital number, since it uses as much as digits as its factorization.

45980281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 45980281 is about 6780.8761233339. The cubic root of 45980281 is about 358.2535811456.

The spelling of 45980281 in words is "forty-five million, nine hundred eighty thousand, two hundred eighty-one".