7875065531 has 2 divisors, whose sum is σ = 7875065532. Its totient is φ = 7875065530.

The previous prime is 7875065509. The next prime is 7875065543. The reversal of 7875065531 is 1355605787.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7875065531 is a prime.

It is a super-2 number, since 2×7875065531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7875065591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3937532765 + 3937532766.

It is an arithmetic number, because the mean of its divisors is an integer number (3937532766).

Almost surely, 2^7875065531 is an apocalyptic number.

7875065531 is a deficient number, since it is larger than the sum of its proper divisors (1).

7875065531 is an equidigital number, since it uses as much as digits as its factorization.

7875065531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882000, while the sum is 47.

The square root of 7875065531 is about 88741.5659710826. The cubic root of 7875065531 is about 1989.5341224852.

The spelling of 7875065531 in words is "seven billion, eight hundred seventy-five million, sixty-five thousand, five hundred thirty-one".