49521657 has 8 divisors (see below), whose sum is σ = 69504160. Its totient is φ = 31276800.

The previous prime is 49521631. The next prime is 49521671. The reversal of 49521657 is 75612594.

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

It is not a de Polignac number, because 49521657 - 2⁸ = 49521401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49521607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434344 + ... + 434457.

It is an arithmetic number, because the mean of its divisors is an integer number (8688020).

Almost surely, 2^49521657 is an apocalyptic number.

It is an amenable number.

49521657 is a deficient number, since it is larger than the sum of its proper divisors (19982503).

49521657 is a wasteful number, since it uses less digits than its factorization.

49521657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868823.

The product of its digits is 75600, while the sum is 39.

The square root of 49521657 is about 7037.1625673989. The cubic root of 49521657 is about 367.2245629237.

The spelling of 49521657 in words is "forty-nine million, five hundred twenty-one thousand, six hundred fifty-seven".