549605501 has 2 divisors, whose sum is σ = 549605502. Its totient is φ = 549605500.

The previous prime is 549605491. The next prime is 549605509. The reversal of 549605501 is 105506945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473932900 + 75672601 = 21770^2 + 8699^2 .

It is a cyclic number.

It is not a de Polignac number, because 549605501 - 2¹⁰ = 549604477 is a prime.

It is a super-2 number, since 2×549605501² = 604132413458922002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549605509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274802750 + 274802751.

It is an arithmetic number, because the mean of its divisors is an integer number (274802751).

Almost surely, 2^549605501 is an apocalyptic number.

It is an amenable number.

549605501 is a deficient number, since it is larger than the sum of its proper divisors (1).

549605501 is an equidigital number, since it uses as much as digits as its factorization.

549605501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 549605501 is about 23443.6665434398. Note that the first 3 decimals coincide. The cubic root of 549605501 is about 819.1253319753.

The spelling of 549605501 in words is "five hundred forty-nine million, six hundred five thousand, five hundred one".