1053525661 has 4 divisors (see below), whose sum is σ = 1108974400. Its totient is φ = 998076924.

The previous prime is 1053525637. The next prime is 1053525673. The reversal of 1053525661 is 1665253501.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1665253501 = 3769 ⋅441829.

It is a cyclic number.

It is not a de Polignac number, because 1053525661 - 2¹³ = 1053517469 is a prime.

It is a super-2 number, since 2×1053525661² = 2219832636770973842, 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 (1053525611) 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, 27724341 + ... + 27724378.

It is an arithmetic number, because the mean of its divisors is an integer number (277243600).

Almost surely, 2^1053525661 is an apocalyptic number.

It is an amenable number.

1053525661 is a deficient number, since it is larger than the sum of its proper divisors (55448739).

1053525661 is an equidigital number, since it uses as much as digits as its factorization.

1053525661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55448738.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 1053525661 is about 32458.0600313697. The cubic root of 1053525661 is about 1017.5326951122.

The spelling of 1053525661 in words is "one billion, fifty-three million, five hundred twenty-five thousand, six hundred sixty-one".