61009441 has 4 divisors (see below), whose sum is σ = 61028352. Its totient is φ = 60990532.

The previous prime is 61009439. The next prime is 61009471. The reversal of 61009441 is 14490016.

61009441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61009441 - 2¹ = 61009439 is a prime.

It is a super-2 number, since 2×61009441² = 7444303782264962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61009471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3265 + ... + 11518.

It is an arithmetic number, because the mean of its divisors is an integer number (15257088).

Almost surely, 2^61009441 is an apocalyptic number.

It is an amenable number.

61009441 is a deficient number, since it is larger than the sum of its proper divisors (18911).

61009441 is a wasteful number, since it uses less digits than its factorization.

61009441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18910.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 61009441 is about 7810.8540506144. The cubic root of 61009441 is about 393.6700257161.

Adding to 61009441 its reverse (14490016), we get a palindrome (75499457).

It can be divided in two parts, 61009 and 441, that multiplied together give a square (26904969 = 5187²).

The spelling of 61009441 in words is "sixty-one million, nine thousand, four hundred forty-one".