48637661 has 8 divisors (see below), whose sum is σ = 49283544. Its totient is φ = 47995200.

The previous prime is 48637657. The next prime is 48637681. The reversal of 48637661 is 16673684.

It can be written as a sum of positive squares in 4 ways, for example, as 10432900 + 38204761 = 3230^2 + 6181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 48637661 - 2² = 48637657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48637681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39491 + ... + 40703.

It is an arithmetic number, because the mean of its divisors is an integer number (6160443).

Almost surely, 2^48637661 is an apocalyptic number.

It is an amenable number.

48637661 is a deficient number, since it is larger than the sum of its proper divisors (645883).

48637661 is a wasteful number, since it uses less digits than its factorization.

48637661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711.

The product of its digits is 145152, while the sum is 41.

The square root of 48637661 is about 6974.0706190861. The cubic root of 48637661 is about 365.0263595150.

The spelling of 48637661 in words is "forty-eight million, six hundred thirty-seven thousand, six hundred sixty-one".