548691061 has 2 divisors, whose sum is σ = 548691062. Its totient is φ = 548691060.

The previous prime is 548691047. The next prime is 548691079. The reversal of 548691061 is 160196845.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444956836 + 103734225 = 21094^2 + 10185^2 .

It is a cyclic number.

It is not a de Polignac number, because 548691061 - 2⁵ = 548691029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548691161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274345530 + 274345531.

It is an arithmetic number, because the mean of its divisors is an integer number (274345531).

Almost surely, 2^548691061 is an apocalyptic number.

It is an amenable number.

548691061 is a deficient number, since it is larger than the sum of its proper divisors (1).

548691061 is an equidigital number, since it uses as much as digits as its factorization.

548691061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 548691061 is about 23424.1555023868. The cubic root of 548691061 is about 818.6707897187.

The spelling of 548691061 in words is "five hundred forty-eight million, six hundred ninety-one thousand, sixty-one".