48121691 has 4 divisors (see below), whose sum is σ = 48140400. Its totient is φ = 48102984.

The previous prime is 48121669. The next prime is 48121693. The reversal of 48121691 is 19612184.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 48121691 - 2¹⁸ = 47859547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48121693) 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, 4736 + ... + 10893.

It is an arithmetic number, because the mean of its divisors is an integer number (12035100).

Almost surely, 2^48121691 is an apocalyptic number.

48121691 is a deficient number, since it is larger than the sum of its proper divisors (18709).

48121691 is a wasteful number, since it uses less digits than its factorization.

48121691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18708.

The product of its digits is 3456, while the sum is 32.

The square root of 48121691 is about 6936.9799624909. The cubic root of 48121691 is about 363.7309805323.

The spelling of 48121691 in words is "forty-eight million, one hundred twenty-one thousand, six hundred ninety-one".