49878537 has 12 divisors (see below), whose sum is σ = 67292400. Its totient is φ = 32863072.

The previous prime is 49878533. The next prime is 49878557. The reversal of 49878537 is 73587894.

It is not a de Polignac number, because 49878537 - 2² = 49878533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49878537.

It is not an unprimeable number, because it can be changed into a prime (49878533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22714 + ... + 24812.

It is an arithmetic number, because the mean of its divisors is an integer number (5607700).

Almost surely, 2^49878537 is an apocalyptic number.

It is an amenable number.

49878537 is a deficient number, since it is larger than the sum of its proper divisors (17413863).

49878537 is an equidigital number, since it uses as much as digits as its factorization.

49878537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280 (or 2191 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 49878537 is about 7062.4738583587. The cubic root of 49878537 is about 368.1045922968.

The spelling of 49878537 in words is "forty-nine million, eight hundred seventy-eight thousand, five hundred thirty-seven".