61441553 has 4 divisors (see below), whose sum is σ = 65055780. Its totient is φ = 57827328.

The previous prime is 61441543. The next prime is 61441559. The reversal of 61441553 is 35514416.

It is a happy number.

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 19864849 + 41576704 = 4457^2 + 6448^2 .

It is a cyclic number.

It is not a de Polignac number, because 61441553 - 2¹⁰ = 61440529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61441559) 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, 1807088 + ... + 1807121.

It is an arithmetic number, because the mean of its divisors is an integer number (16263945).

Almost surely, 2^61441553 is an apocalyptic number.

It is an amenable number.

61441553 is a deficient number, since it is larger than the sum of its proper divisors (3614227).

61441553 is a wasteful number, since it uses less digits than its factorization.

61441553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614226.

The product of its digits is 7200, while the sum is 29.

The square root of 61441553 is about 7838.4662402794. The cubic root of 61441553 is about 394.5972565414.

Adding to 61441553 its reverse (35514416), we get a palindrome (96955969).

The spelling of 61441553 in words is "sixty-one million, four hundred forty-one thousand, five hundred fifty-three".