7145559331 has 2 divisors, whose sum is σ = 7145559332. Its totient is φ = 7145559330.

The previous prime is 7145559299. The next prime is 7145559359. The reversal of 7145559331 is 1339555417.

It is a strong prime.

It is an emirp because it is prime and its reverse (1339555417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7145559331 - 2⁵ = 7145559299 is a prime.

It is a super-2 number, since 2×7145559331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7145559361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3572779665 + 3572779666.

It is an arithmetic number, because the mean of its divisors is an integer number (3572779666).

Almost surely, 2^7145559331 is an apocalyptic number.

7145559331 is a deficient number, since it is larger than the sum of its proper divisors (1).

7145559331 is an equidigital number, since it uses as much as digits as its factorization.

7145559331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283500, while the sum is 43.

The square root of 7145559331 is about 84531.4103218443. The cubic root of 7145559331 is about 1926.0996095468.

The spelling of 7145559331 in words is "seven billion, one hundred forty-five million, five hundred fifty-nine thousand, three hundred thirty-one".