481784621 has 2 divisors, whose sum is σ = 481784622. Its totient is φ = 481784620.

The previous prime is 481784593. The next prime is 481784623. The reversal of 481784621 is 126487184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441462121 + 40322500 = 21011^2 + 6350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481784621 is a prime.

It is a super-2 number, since 2×481784621² = 464232842064227282, which contains 22 as substring.

Together with 481784623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481784623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240892310 + 240892311.

It is an arithmetic number, because the mean of its divisors is an integer number (240892311).

Almost surely, 2^481784621 is an apocalyptic number.

It is an amenable number.

481784621 is a deficient number, since it is larger than the sum of its proper divisors (1).

481784621 is an equidigital number, since it uses as much as digits as its factorization.

481784621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 41.

The square root of 481784621 is about 21949.5927297069. The cubic root of 481784621 is about 783.9426829930.

The spelling of 481784621 in words is "four hundred eighty-one million, seven hundred eighty-four thousand, six hundred twenty-one".