7611172021 has 2 divisors, whose sum is σ = 7611172022. Its totient is φ = 7611172020.

The previous prime is 7611172001. The next prime is 7611172033. The reversal of 7611172021 is 1202711167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6841109521 + 770062500 = 82711^2 + 27750^2 .

It is a cyclic number.

It is not a de Polignac number, because 7611172021 - 2⁵ = 7611171989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7611172001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3805586010 + 3805586011.

It is an arithmetic number, because the mean of its divisors is an integer number (3805586011).

Almost surely, 2^7611172021 is an apocalyptic number.

It is an amenable number.

7611172021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7611172021 is an equidigital number, since it uses as much as digits as its factorization.

7611172021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 28.

The square root of 7611172021 is about 87242.0312750683. The cubic root of 7611172021 is about 1967.0580617390.

Adding to 7611172021 its reverse (1202711167), we get a palindrome (8813883188).

The spelling of 7611172021 in words is "seven billion, six hundred eleven million, one hundred seventy-two thousand, twenty-one".