54449561 has 4 divisors (see below), whose sum is σ = 54472500. Its totient is φ = 54426624.

The previous prime is 54449557. The next prime is 54449587. The reversal of 54449561 is 16594445.

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 7595536 + 46854025 = 2756^2 + 6845^2 .

It is a cyclic number.

It is not a de Polignac number, because 54449561 - 2² = 54449557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54449531) 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, 7436 + ... + 12813.

It is an arithmetic number, because the mean of its divisors is an integer number (13618125).

Almost surely, 2^54449561 is an apocalyptic number.

It is an amenable number.

54449561 is a deficient number, since it is larger than the sum of its proper divisors (22939).

54449561 is a wasteful number, since it uses less digits than its factorization.

54449561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22938.

The product of its digits is 86400, while the sum is 38.

The square root of 54449561 is about 7378.9945792093. The cubic root of 54449561 is about 379.0223274997.

It can be divided in two parts, 544 and 49561, that added together give a palindrome (50105).

The spelling of 54449561 in words is "fifty-four million, four hundred forty-nine thousand, five hundred sixty-one".