1054950581 has 4 divisors (see below), whose sum is σ = 1055403564. Its totient is φ = 1054497600.

The previous prime is 1054950571. The next prime is 1054950583. The reversal of 1054950581 is 1850594501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1850594501 = 7 ⋅264370643.

It can be written as a sum of positive squares in 2 ways, for example, as 934280356 + 120670225 = 30566^2 + 10985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1054950581 - 2¹⁴ = 1054934197 is a prime.

It is a super-2 number, since 2×1054950581² = 2225841456704475122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1054950583) 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, 222980 + ... + 227661.

It is an arithmetic number, because the mean of its divisors is an integer number (263850891).

Almost surely, 2^1054950581 is an apocalyptic number.

It is an amenable number.

1054950581 is a deficient number, since it is larger than the sum of its proper divisors (452983).

1054950581 is an equidigital number, since it uses as much as digits as its factorization.

1054950581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452982.

The product of its (nonzero) digits is 36000, while the sum is 38.

The square root of 1054950581 is about 32480.0027863299. The cubic root of 1054950581 is about 1017.9912346478.

The spelling of 1054950581 in words is "one billion, fifty-four million, nine hundred fifty thousand, five hundred eighty-one".