7543554461 has 2 divisors, whose sum is σ = 7543554462. Its totient is φ = 7543554460.

The previous prime is 7543554409. The next prime is 7543554481. The reversal of 7543554461 is 1644553457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7175106436 + 368448025 = 84706^2 + 19195^2 .

It is an emirp because it is prime and its reverse (1644553457) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7543554461 - 2⁶ = 7543554397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7543554481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3771777230 + 3771777231.

It is an arithmetic number, because the mean of its divisors is an integer number (3771777231).

Almost surely, 2^7543554461 is an apocalyptic number.

It is an amenable number.

7543554461 is a deficient number, since it is larger than the sum of its proper divisors (1).

7543554461 is an equidigital number, since it uses as much as digits as its factorization.

7543554461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008000, while the sum is 44.

The square root of 7543554461 is about 86853.6381563835. The cubic root of 7543554461 is about 1961.2156193729.

The spelling of 7543554461 in words is "seven billion, five hundred forty-three million, five hundred fifty-four thousand, four hundred sixty-one".