48645991 has 2 divisors, whose sum is σ = 48645992. Its totient is φ = 48645990.

The previous prime is 48645983. The next prime is 48646019. The reversal of 48645991 is 19954684.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 48645991 - 2³ = 48645983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48645901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24322995 + 24322996.

It is an arithmetic number, because the mean of its divisors is an integer number (24322996).

Almost surely, 2^48645991 is an apocalyptic number.

48645991 is a deficient number, since it is larger than the sum of its proper divisors (1).

48645991 is an equidigital number, since it uses as much as digits as its factorization.

48645991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 46.

The square root of 48645991 is about 6974.6678057095. The cubic root of 48645991 is about 365.0471972495.

The spelling of 48645991 in words is "forty-eight million, six hundred forty-five thousand, nine hundred ninety-one".