61050109 has 4 divisors (see below), whose sum is σ = 61122204. Its totient is φ = 60978016.

The previous prime is 61050091. The next prime is 61050149. The reversal of 61050109 is 90105016.

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 29127609 + 31922500 = 5397^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 61050109 - 2¹¹ = 61048061 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61050109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61050149) 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, 34762 + ... + 36475.

It is an arithmetic number, because the mean of its divisors is an integer number (15280551).

Almost surely, 2^61050109 is an apocalyptic number.

It is an amenable number.

61050109 is a deficient number, since it is larger than the sum of its proper divisors (72095).

61050109 is an equidigital number, since it uses as much as digits as its factorization.

61050109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72094.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 61050109 is about 7813.4569173958. The cubic root of 61050109 is about 393.7574778457.

The spelling of 61050109 in words is "sixty-one million, fifty thousand, one hundred nine".