48578009 has 2 divisors, whose sum is σ = 48578010. Its totient is φ = 48578008.

The previous prime is 48577981. The next prime is 48578011. The reversal of 48578009 is 90087584.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44689225 + 3888784 = 6685^2 + 1972^2 .

It is a cyclic number.

It is not a de Polignac number, because 48578009 - 2¹⁶ = 48512473 is a prime.

Together with 48578011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (48578099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24289004 + 24289005.

It is an arithmetic number, because the mean of its divisors is an integer number (24289005).

Almost surely, 2^48578009 is an apocalyptic number.

It is an amenable number.

48578009 is a deficient number, since it is larger than the sum of its proper divisors (1).

48578009 is an equidigital number, since it uses as much as digits as its factorization.

48578009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 48578009 is about 6969.7926081054. The cubic root of 48578009 is about 364.8770687537.

The spelling of 48578009 in words is "forty-eight million, five hundred seventy-eight thousand, nine".