48001661 has 4 divisors (see below), whose sum is σ = 48659292. Its totient is φ = 47344032.

The previous prime is 48001637. The next prime is 48001663. The reversal of 48001661 is 16610084.

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 38204761 + 9796900 = 6181^2 + 3130^2 .

It is a cyclic number.

It is not a de Polignac number, because 48001661 - 2¹⁴ = 47985277 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 48001661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48001663) 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, 328706 + ... + 328851.

It is an arithmetic number, because the mean of its divisors is an integer number (12164823).

Almost surely, 2^48001661 is an apocalyptic number.

It is an amenable number.

48001661 is a deficient number, since it is larger than the sum of its proper divisors (657631).

48001661 is an equidigital number, since it uses as much as digits as its factorization.

48001661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657630.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 48001661 is about 6928.3231015881. The cubic root of 48001661 is about 363.4283105143.

The spelling of 48001661 in words is "forty-eight million, one thousand, six hundred sixty-one".