48921591 has 8 divisors (see below), whose sum is σ = 66202624. Its totient is φ = 32127480.

The previous prime is 48921583. The next prime is 48921629. The reversal of 48921591 is 19512984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 48921591 - 2³ = 48921583 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 (48921571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121495 + ... + 121896.

It is an arithmetic number, because the mean of its divisors is an integer number (8275328).

Almost surely, 2^48921591 is an apocalyptic number.

48921591 is a deficient number, since it is larger than the sum of its proper divisors (17281033).

48921591 is a wasteful number, since it uses less digits than its factorization.

48921591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243461.

The product of its digits is 25920, while the sum is 39.

The square root of 48921591 is about 6994.3971148341. The cubic root of 48921591 is about 365.7352814237.

The spelling of 48921591 in words is "forty-eight million, nine hundred twenty-one thousand, five hundred ninety-one".