49539521 has 8 divisors (see below), whose sum is σ = 50877288. Its totient is φ = 48208000.

The previous prime is 49539509. The next prime is 49539533. The reversal of 49539521 is 12593594.

It is an interprime number because it is at equal distance from previous prime (49539509) and next prime (49539533).

It can be written as a sum of positive squares in 4 ways, for example, as 1860496 + 47679025 = 1364^2 + 6905^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 49539521 - 2¹⁰ = 49538497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49539541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17591 + ... + 20211.

It is an arithmetic number, because the mean of its divisors is an integer number (6359661).

Almost surely, 2^49539521 is an apocalyptic number.

49539521 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

49539521 is a deficient number, since it is larger than the sum of its proper divisors (1337767).

49539521 is a wasteful number, since it uses less digits than its factorization.

49539521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123.

The product of its digits is 48600, while the sum is 38.

The square root of 49539521 is about 7038.4317145228. The cubic root of 49539521 is about 367.2687140509.

The spelling of 49539521 in words is "forty-nine million, five hundred thirty-nine thousand, five hundred twenty-one".