481788457 has 2 divisors, whose sum is σ = 481788458. Its totient is φ = 481788456.

The previous prime is 481788451. The next prime is 481788473. The reversal of 481788457 is 754887184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 457147161 + 24641296 = 21381^2 + 4964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481788457 is a prime.

It is not a weakly prime, because it can be changed into another prime (481788451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240894228 + 240894229.

It is an arithmetic number, because the mean of its divisors is an integer number (240894229).

Almost surely, 2^481788457 is an apocalyptic number.

It is an amenable number.

481788457 is a deficient number, since it is larger than the sum of its proper divisors (1).

481788457 is an equidigital number, since it uses as much as digits as its factorization.

481788457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2007040, while the sum is 52.

The square root of 481788457 is about 21949.6801115643. The cubic root of 481788457 is about 783.9447635881.

The spelling of 481788457 in words is "four hundred eighty-one million, seven hundred eighty-eight thousand, four hundred fifty-seven".