48409561 has 4 divisors (see below), whose sum is σ = 49590324. Its totient is φ = 47228800.

The previous prime is 48409531. The next prime is 48409573. The reversal of 48409561 is 16590484.

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 18870336 + 29539225 = 4344^2 + 5435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48409561 is a prime.

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 48409561.

It is not an unprimeable number, because it can be changed into a prime (48409531) 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, 590320 + ... + 590401.

It is an arithmetic number, because the mean of its divisors is an integer number (12397581).

Almost surely, 2^48409561 is an apocalyptic number.

48409561 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

48409561 is a deficient number, since it is larger than the sum of its proper divisors (1180763).

48409561 is a wasteful number, since it uses less digits than its factorization.

48409561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180762.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 48409561 is about 6957.6979670003. The cubic root of 48409561 is about 364.4548338558.

The spelling of 48409561 in words is "forty-eight million, four hundred nine thousand, five hundred sixty-one".