1020054081 has 4 divisors (see below), whose sum is σ = 1360072112. Its totient is φ = 680036052.

The previous prime is 1020054001. The next prime is 1020054103. The reversal of 1020054081 is 1804500201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1020054081 - 2²⁷ = 885836353 is a prime.

It is a super-2 number, since 2×1020054081² = 2081020656329509122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020054001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170009011 + ... + 170009016.

It is an arithmetic number, because the mean of its divisors is an integer number (340018028).

Almost surely, 2^1020054081 is an apocalyptic number.

It is an amenable number.

1020054081 is a deficient number, since it is larger than the sum of its proper divisors (340018031).

1020054081 is an equidigital number, since it uses as much as digits as its factorization.

1020054081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340018030.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1020054081 is about 31938.2855050173. The cubic root of 1020054081 is about 1006.6404998218.

Adding to 1020054081 its reverse (1804500201), we get a palindrome (2824554282).

The spelling of 1020054081 in words is "one billion, twenty million, fifty-four thousand, eighty-one".