49487251 has 4 divisors (see below), whose sum is σ = 53986104. Its totient is φ = 44988400.

The previous prime is 49487239. The next prime is 49487257. The reversal of 49487251 is 15278494.

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 49487251 - 2⁹ = 49486739 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49487257) 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, 2249410 + ... + 2249431.

It is an arithmetic number, because the mean of its divisors is an integer number (13496526).

Almost surely, 2^49487251 is an apocalyptic number.

49487251 is a deficient number, since it is larger than the sum of its proper divisors (4498853).

49487251 is a wasteful number, since it uses less digits than its factorization.

49487251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4498852.

The product of its digits is 80640, while the sum is 40.

The square root of 49487251 is about 7034.7175494116. The cubic root of 49487251 is about 367.1394980836.

The spelling of 49487251 in words is "forty-nine million, four hundred eighty-seven thousand, two hundred fifty-one".