61123841 has 4 divisors (see below), whose sum is σ = 61477332. Its totient is φ = 60770352.

The previous prime is 61123831. The next prime is 61123861. The reversal of 61123841 is 14832116.

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 28302400 + 32821441 = 5320^2 + 5729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61123841 is a prime.

It is a super-2 number, since 2×61123841² = 7472247877186562, which contains 22 as substring.

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 61123841.

It is not an unprimeable number, because it can be changed into a prime (61123831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176486 + ... + 176831.

It is an arithmetic number, because the mean of its divisors is an integer number (15369333).

Almost surely, 2^61123841 is an apocalyptic number.

It is an amenable number.

61123841 is a deficient number, since it is larger than the sum of its proper divisors (353491).

61123841 is a wasteful number, since it uses less digits than its factorization.

61123841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353490.

The product of its digits is 1152, while the sum is 26.

The square root of 61123841 is about 7818.1737637379. The cubic root of 61123841 is about 393.9159315425.

Adding to 61123841 its reverse (14832116), we get a palindrome (75955957).

The spelling of 61123841 in words is "sixty-one million, one hundred twenty-three thousand, eight hundred forty-one".