1061540053 has 4 divisors (see below), whose sum is σ = 1213188640. Its totient is φ = 909891468.

The previous prime is 1061540047. The next prime is 1061540057. The reversal of 1061540053 is 3500451601.

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 a cyclic number.

It is not a de Polignac number, because 1061540053 - 2¹⁷ = 1061408981 is a prime.

It is a super-2 number, since 2×1061540053² = 2253734568246485618, 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 (1061540057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75824283 + ... + 75824296.

It is an arithmetic number, because the mean of its divisors is an integer number (303297160).

Almost surely, 2^1061540053 is an apocalyptic number.

It is an amenable number.

1061540053 is a deficient number, since it is larger than the sum of its proper divisors (151648587).

1061540053 is an equidigital number, since it uses as much as digits as its factorization.

1061540053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151648586.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1061540053 is about 32581.2837837922. The cubic root of 1061540053 is about 1020.1063752316.

Adding to 1061540053 its reverse (3500451601), we get a palindrome (4561991654).

The spelling of 1061540053 in words is "one billion, sixty-one million, five hundred forty thousand, fifty-three".