1305440053 has 8 divisors (see below), whose sum is σ = 1340776800. Its totient is φ = 1270329648.

The previous prime is 1305440027. The next prime is 1305440057. The reversal of 1305440053 is 3500445031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305440053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305440057) 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, 44863 + ... + 67996.

It is an arithmetic number, because the mean of its divisors is an integer number (167597100).

Almost surely, 2^1305440053 is an apocalyptic number.

It is an amenable number.

1305440053 is a deficient number, since it is larger than the sum of its proper divisors (35336747).

1305440053 is a wasteful number, since it uses less digits than its factorization.

1305440053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113171.

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

The square root of 1305440053 is about 36130.8739584306. The cubic root of 1305440053 is about 1092.9131324368.

Adding to 1305440053 its reverse (3500445031), we get a palindrome (4805885084).

The spelling of 1305440053 in words is "one billion, three hundred five million, four hundred forty thousand, fifty-three".