48811891 has 2 divisors, whose sum is σ = 48811892. Its totient is φ = 48811890.

The previous prime is 48811877. The next prime is 48811921. The reversal of 48811891 is 19811884.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 48811891 - 2¹¹ = 48809843 is a prime.

It is not a weakly prime, because it can be changed into another prime (48811291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24405945 + 24405946.

It is an arithmetic number, because the mean of its divisors is an integer number (24405946).

Almost surely, 2^48811891 is an apocalyptic number.

48811891 is a deficient number, since it is larger than the sum of its proper divisors (1).

48811891 is an equidigital number, since it uses as much as digits as its factorization.

48811891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 40.

The square root of 48811891 is about 6986.5507226385. The cubic root of 48811891 is about 365.4617063300.

The spelling of 48811891 in words is "forty-eight million, eight hundred eleven thousand, eight hundred ninety-one".