48128515 has 4 divisors (see below), whose sum is σ = 57754224. Its totient is φ = 38502808.

The previous prime is 48128491. The next prime is 48128533. The reversal of 48128515 is 51582184.

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 48128515 - 2¹¹ = 48126467 is a prime.

It is a super-2 number, since 2×48128515² = 4632707912210450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4812847 + ... + 4812856.

It is an arithmetic number, because the mean of its divisors is an integer number (14438556).

Almost surely, 2^48128515 is an apocalyptic number.

48128515 is a deficient number, since it is larger than the sum of its proper divisors (9625709).

48128515 is an equidigital number, since it uses as much as digits as its factorization.

48128515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9625708.

The product of its digits is 12800, while the sum is 34.

The square root of 48128515 is about 6937.4718017445. The cubic root of 48128515 is about 363.7481729379.

The spelling of 48128515 in words is "forty-eight million, one hundred twenty-eight thousand, five hundred fifteen".