498581081 has 2 divisors, whose sum is σ = 498581082. Its totient is φ = 498581080.

The previous prime is 498580991. The next prime is 498581101. The reversal of 498581081 is 180185894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 461175625 + 37405456 = 21475^2 + 6116^2 .

It is a cyclic number.

It is not a de Polignac number, because 498581081 - 2²² = 494386777 is a prime.

It is a super-2 number, since 2×498581081² = 497166188662257122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (498581381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249290540 + 249290541.

It is an arithmetic number, because the mean of its divisors is an integer number (249290541).

Almost surely, 2^498581081 is an apocalyptic number.

It is an amenable number.

498581081 is a deficient number, since it is larger than the sum of its proper divisors (1).

498581081 is an equidigital number, since it uses as much as digits as its factorization.

498581081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 44.

The square root of 498581081 is about 22328.9292398897. The cubic root of 498581081 is about 792.9490168103.

The spelling of 498581081 in words is "four hundred ninety-eight million, five hundred eighty-one thousand, eighty-one".