48121919 has 4 divisors (see below), whose sum is σ = 48196944. Its totient is φ = 48046896.

The previous prime is 48121901. The next prime is 48121921. The reversal of 48121919 is 91912184.

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 48121919 - 2⁸ = 48121663 is a prime.

It is a super-2 number, since 2×48121919² = 4631438176485122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48121949) 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, 36542 + ... + 37835.

It is an arithmetic number, because the mean of its divisors is an integer number (12049236).

Almost surely, 2^48121919 is an apocalyptic number.

48121919 is a deficient number, since it is larger than the sum of its proper divisors (75025).

48121919 is an equidigital number, since it uses as much as digits as its factorization.

48121919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75024.

The product of its digits is 5184, while the sum is 35.

The square root of 48121919 is about 6936.9963961357. The cubic root of 48121919 is about 363.7315549824.

The spelling of 48121919 in words is "forty-eight million, one hundred twenty-one thousand, nine hundred nineteen".