7157451247 has 4 divisors (see below), whose sum is σ = 7278764040. Its totient is φ = 7036138456.

The previous prime is 7157451241. The next prime is 7157451263. The reversal of 7157451247 is 7421547517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7421547517 = 23 ⋅322675979.

It is not a de Polignac number, because 7157451247 - 2¹⁵ = 7157418479 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 (7157451241) 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, 60656308 + ... + 60656425.

It is an arithmetic number, because the mean of its divisors is an integer number (1819691010).

Almost surely, 2^7157451247 is an apocalyptic number.

7157451247 is a deficient number, since it is larger than the sum of its proper divisors (121312793).

7157451247 is a wasteful number, since it uses less digits than its factorization.

7157451247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121312792.

The product of its digits is 274400, while the sum is 43.

The square root of 7157451247 is about 84601.7213004558. The cubic root of 7157451247 is about 1927.1675138198.

The spelling of 7157451247 in words is "seven billion, one hundred fifty-seven million, four hundred fifty-one thousand, two hundred forty-seven".