81484001 has 2 divisors, whose sum is σ = 81484002. Its totient is φ = 81484000.

The previous prime is 81483991. The next prime is 81484037. The reversal of 81484001 is 10048418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55115776 + 26368225 = 7424^2 + 5135^2 .

It is a cyclic number.

It is not a de Polignac number, because 81484001 - 2⁶ = 81483937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (81484301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40742000 + 40742001.

It is an arithmetic number, because the mean of its divisors is an integer number (40742001).

Almost surely, 2^81484001 is an apocalyptic number.

It is an amenable number.

81484001 is a deficient number, since it is larger than the sum of its proper divisors (1).

81484001 is an equidigital number, since it uses as much as digits as its factorization.

81484001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 81484001 is about 9026.8488964865. The cubic root of 81484001 is about 433.5349506890.

The spelling of 81484001 in words is "eighty-one million, four hundred eighty-four thousand, one".