1053540403 has 8 divisors (see below), whose sum is σ = 1075581360. Its totient is φ = 1031639040.

The previous prime is 1053540359. The next prime is 1053540421. The reversal of 1053540403 is 3040453501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1053540403 - 2⁹ = 1053539891 is a prime.

It is a super-2 number, since 2×1053540403² = 2219894761506804818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1053540703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19578 + ... + 49903.

It is an arithmetic number, because the mean of its divisors is an integer number (134447670).

Almost surely, 2^1053540403 is an apocalyptic number.

1053540403 is a deficient number, since it is larger than the sum of its proper divisors (22040957).

1053540403 is an equidigital number, since it uses as much as digits as its factorization.

1053540403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69797.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1053540403 is about 32458.2871236299. The cubic root of 1053540403 is about 1017.5374412067.

Adding to 1053540403 its reverse (3040453501), we get a palindrome (4093993904).

The spelling of 1053540403 in words is "one billion, fifty-three million, five hundred forty thousand, four hundred three".