7485537131 has 2 divisors, whose sum is σ = 7485537132. Its totient is φ = 7485537130.

The previous prime is 7485537049. The next prime is 7485537139. The reversal of 7485537131 is 1317355847.

It is a strong prime.

It is an emirp because it is prime and its reverse (1317355847) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7485537131 is a prime.

It is a super-2 number, since 2×7485537131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7485537139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3742768565 + 3742768566.

It is an arithmetic number, because the mean of its divisors is an integer number (3742768566).

Almost surely, 2^7485537131 is an apocalyptic number.

7485537131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7485537131 is an equidigital number, since it uses as much as digits as its factorization.

7485537131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 44.

The square root of 7485537131 is about 86518.9986708122. The cubic root of 7485537131 is about 1956.1747838726.

The spelling of 7485537131 in words is "seven billion, four hundred eighty-five million, five hundred thirty-seven thousand, one hundred thirty-one".