48972191 has 4 divisors (see below), whose sum is σ = 49045632. Its totient is φ = 48898752.

The previous prime is 48972137. The next prime is 48972193. The reversal of 48972191 is 19127984.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48972191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48972193) 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, 35711 + ... + 37056.

It is an arithmetic number, because the mean of its divisors is an integer number (12261408).

Almost surely, 2^48972191 is an apocalyptic number.

48972191 is a deficient number, since it is larger than the sum of its proper divisors (73441).

48972191 is an equidigital number, since it uses as much as digits as its factorization.

48972191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73440.

The product of its digits is 36288, while the sum is 41.

The square root of 48972191 is about 6998.0133609475. The cubic root of 48972191 is about 365.8613323020.

The spelling of 48972191 in words is "forty-eight million, nine hundred seventy-two thousand, one hundred ninety-one".