7253971509 has 4 divisors (see below), whose sum is σ = 9671962016. Its totient is φ = 4835981004.

The previous prime is 7253971481. The next prime is 7253971513. The reversal of 7253971509 is 9051793527.

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 de Polignac number, because none of the positive numbers 2^k-7253971509 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 (7253971409) 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, 1208995249 + ... + 1208995254.

It is an arithmetic number, because the mean of its divisors is an integer number (2417990504).

Almost surely, 2^7253971509 is an apocalyptic number.

It is an amenable number.

7253971509 is a deficient number, since it is larger than the sum of its proper divisors (2417990507).

7253971509 is a wasteful number, since it uses less digits than its factorization.

7253971509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417990506.

The product of its (nonzero) digits is 595350, while the sum is 48.

The square root of 7253971509 is about 85170.2501405274. The cubic root of 7253971509 is about 1935.7916631909.

The spelling of 7253971509 in words is "seven billion, two hundred fifty-three million, nine hundred seventy-one thousand, five hundred nine".