7531437481 has 2 divisors, whose sum is σ = 7531437482. Its totient is φ = 7531437480.

The previous prime is 7531437451. The next prime is 7531437527. The reversal of 7531437481 is 1847341357.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7502331456 + 29106025 = 86616^2 + 5395^2 .

It is an emirp because it is prime and its reverse (1847341357) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7531437481 - 2⁵ = 7531437449 is a prime.

It is a super-2 number, since 2×7531437481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7531437451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3765718740 + 3765718741.

It is an arithmetic number, because the mean of its divisors is an integer number (3765718741).

Almost surely, 2^7531437481 is an apocalyptic number.

It is an amenable number.

7531437481 is a deficient number, since it is larger than the sum of its proper divisors (1).

7531437481 is an equidigital number, since it uses as much as digits as its factorization.

7531437481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 43.

The square root of 7531437481 is about 86783.8549558615. The cubic root of 7531437481 is about 1960.1649764819.

The spelling of 7531437481 in words is "seven billion, five hundred thirty-one million, four hundred thirty-seven thousand, four hundred eighty-one".