550542101 has 2 divisors, whose sum is σ = 550542102. Its totient is φ = 550542100.

The previous prime is 550542077. The next prime is 550542131. The reversal of 550542101 is 101245055.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477422500 + 73119601 = 21850^2 + 8551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550542101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550542131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275271050 + 275271051.

It is an arithmetic number, because the mean of its divisors is an integer number (275271051).

Almost surely, 2^550542101 is an apocalyptic number.

It is an amenable number.

550542101 is a deficient number, since it is larger than the sum of its proper divisors (1).

550542101 is an equidigital number, since it uses as much as digits as its factorization.

550542101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 550542101 is about 23463.6335847626. The cubic root of 550542101 is about 819.5903669853.

Adding to 550542101 its reverse (101245055), we get a palindrome (651787156).

The spelling of 550542101 in words is "five hundred fifty million, five hundred forty-two thousand, one hundred one".