1051005553 has 4 divisors (see below), whose sum is σ = 1131852148. Its totient is φ = 970158960.

The previous prime is 1051005551. The next prime is 1051005583. The reversal of 1051005553 is 3555001501.

1051005553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3555001501 = 79 ⋅45000019.

It can be written as a sum of positive squares in 2 ways, for example, as 613651984 + 437353569 = 24772^2 + 20913^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051005553 - 2¹ = 1051005551 is a prime.

It is a super-2 number, since 2×1051005553² = 2209225344873671618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051005551) 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, 40423278 + ... + 40423303.

It is an arithmetic number, because the mean of its divisors is an integer number (282963037).

Almost surely, 2^1051005553 is an apocalyptic number.

1051005553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1051005553 is a deficient number, since it is larger than the sum of its proper divisors (80846595).

1051005553 is an equidigital number, since it uses as much as digits as its factorization.

1051005553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80846594.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 1051005553 is about 32419.2157986587. The cubic root of 1051005553 is about 1016.7207105673.

The spelling of 1051005553 in words is "one billion, fifty-one million, five thousand, five hundred fifty-three".