1301540551 has 4 divisors (see below), whose sum is σ = 1313481400. Its totient is φ = 1289599704.

The previous prime is 1301540543. The next prime is 1301540609. The reversal of 1301540551 is 1550451031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1301540551 - 2³ = 1301540543 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 (1301540501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5970261 + ... + 5970478.

It is an arithmetic number, because the mean of its divisors is an integer number (328370350).

Almost surely, 2^1301540551 is an apocalyptic number.

1301540551 is a deficient number, since it is larger than the sum of its proper divisors (11940849).

1301540551 is a wasteful number, since it uses less digits than its factorization.

1301540551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11940848.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1301540551 is about 36076.8700277616. The cubic root of 1301540551 is about 1091.8238273382.

Adding to 1301540551 its reverse (1550451031), we get a palindrome (2851991582).

The spelling of 1301540551 in words is "one billion, three hundred one million, five hundred forty thousand, five hundred fifty-one".