1103548561 has 2 divisors, whose sum is σ = 1103548562. Its totient is φ = 1103548560.

The previous prime is 1103548483. The next prime is 1103548573. The reversal of 1103548561 is 1658453011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1024000000 + 79548561 = 32000^2 + 8919^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103548561 - 2¹³ = 1103540369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1103548361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551774280 + 551774281.

It is an arithmetic number, because the mean of its divisors is an integer number (551774281).

Almost surely, 2^1103548561 is an apocalyptic number.

It is an amenable number.

1103548561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103548561 is an equidigital number, since it uses as much as digits as its factorization.

1103548561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 1103548561 is about 33219.7013984172. The cubic root of 1103548561 is about 1033.3889569665.

The spelling of 1103548561 in words is "one billion, one hundred three million, five hundred forty-eight thousand, five hundred sixty-one".