30100061 has 4 divisors (see below), whose sum is σ = 30126012. Its totient is φ = 30074112.

The previous prime is 30100051. The next prime is 30100079. The reversal of 30100061 is 16000103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5040025 + 25060036 = 2245^2 + 5006^2 .

It is a cyclic number.

It is not a de Polignac number, because 30100061 - 2⁶ = 30099997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30100051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11150 + ... + 13583.

It is an arithmetic number, because the mean of its divisors is an integer number (7531503).

Almost surely, 2^30100061 is an apocalyptic number.

It is an amenable number.

30100061 is a deficient number, since it is larger than the sum of its proper divisors (25951).

30100061 is a wasteful number, since it uses less digits than its factorization.

30100061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25950.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 30100061 is about 5486.3522489902. The cubic root of 30100061 is about 311.0683258859.

Adding to 30100061 its reverse (16000103), we get a palindrome (46100164).

The spelling of 30100061 in words is "thirty million, one hundred thousand, sixty-one".