Search a number
BaseRepresentation
bin11001110111111…
…011011000000001
31010020211010121202
4121313323120001
51342111412041
6111024030545
713520500643
oct3167733001
91106733552
10434091521
11203040426
12101462455
136bc199b6
144191a893
1528199a9b
hex19dfb601

434091521 has 2 divisors, whose sum is σ = 434091522. Its totient is φ = 434091520.

The previous prime is 434091479. The next prime is 434091523. The reversal of 434091521 is 125190434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 431808400 + 2283121 = 20780^2 + 1511^2 .

It is a cyclic number.

It is not a de Polignac number, because 434091521 - 26 = 434091457 is a prime.

Together with 434091523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (434091523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217045760 + 217045761.

It is an arithmetic number, because the mean of its divisors is an integer number (217045761).

Almost surely, 2434091521 is an apocalyptic number.

It is an amenable number.

434091521 is a deficient number, since it is larger than the sum of its proper divisors (1).

434091521 is an equidigital number, since it uses as much as digits as its factorization.

434091521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 434091521 is about 20834.8631145011. The cubic root of 434091521 is about 757.1706438513.

The spelling of 434091521 in words is "four hundred thirty-four million, ninety-one thousand, five hundred twenty-one".