7546772521 has 2 divisors, whose sum is σ = 7546772522. Its totient is φ = 7546772520.

The previous prime is 7546772477. The next prime is 7546772537. The reversal of 7546772521 is 1252776457.

7546772521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7488479296 + 58293225 = 86536^2 + 7635^2 .

It is a cyclic number.

It is not a de Polignac number, because 7546772521 - 2¹⁷ = 7546641449 is a prime.

It is not a weakly prime, because it can be changed into another prime (7546772551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3773386260 + 3773386261.

It is an arithmetic number, because the mean of its divisors is an integer number (3773386261).

Almost surely, 2^7546772521 is an apocalyptic number.

It is an amenable number.

7546772521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7546772521 is an equidigital number, since it uses as much as digits as its factorization.

7546772521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 823200, while the sum is 46.

The square root of 7546772521 is about 86872.1619450097. The cubic root of 7546772521 is about 1961.4944628243.

The spelling of 7546772521 in words is "seven billion, five hundred forty-six million, seven hundred seventy-two thousand, five hundred twenty-one".