1053145565 has 4 divisors (see below), whose sum is σ = 1263774684. Its totient is φ = 842516448.

The previous prime is 1053145553. The next prime is 1053145567. The reversal of 1053145565 is 5655413501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5655413501 = 17657 ⋅320293.

It can be written as a sum of positive squares in 2 ways, for example, as 286354084 + 766791481 = 16922^2 + 27691^2 .

It is a cyclic number.

It is not a de Polignac number, because 1053145565 - 2⁶ = 1053145501 is a prime.

It is a super-2 number, since 2×1053145565² = 2218231162158338450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053145567) 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, 105314552 + ... + 105314561.

It is an arithmetic number, because the mean of its divisors is an integer number (315943671).

Almost surely, 2^1053145565 is an apocalyptic number.

It is an amenable number.

1053145565 is a deficient number, since it is larger than the sum of its proper divisors (210629119).

1053145565 is an equidigital number, since it uses as much as digits as its factorization.

1053145565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210629118.

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 1053145565 is about 32452.2043165021. The cubic root of 1053145565 is about 1017.4103102973.

The spelling of 1053145565 in words is "one billion, fifty-three million, one hundred forty-five thousand, five hundred sixty-five".