7430597561 has 2 divisors, whose sum is σ = 7430597562. Its totient is φ = 7430597560.

The previous prime is 7430597467. The next prime is 7430597569. The reversal of 7430597561 is 1657950347.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4607694400 + 2822903161 = 67880^2 + 53131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7430597561 is a prime.

It is a super-2 number, since 2×7430597561² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7430597569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3715298780 + 3715298781.

It is an arithmetic number, because the mean of its divisors is an integer number (3715298781).

Almost surely, 2^7430597561 is an apocalyptic number.

It is an amenable number.

7430597561 is a deficient number, since it is larger than the sum of its proper divisors (1).

7430597561 is an equidigital number, since it uses as much as digits as its factorization.

7430597561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 47.

The square root of 7430597561 is about 86200.9139220693. The cubic root of 7430597561 is about 1951.3772922484.

The spelling of 7430597561 in words is "seven billion, four hundred thirty million, five hundred ninety-seven thousand, five hundred sixty-one".