49478615 has 4 divisors (see below), whose sum is σ = 59374344. Its totient is φ = 39582888.

The previous prime is 49478609. The next prime is 49478647. The reversal of 49478615 is 51687494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51687494 = 2 ⋅25843747.

It is a cyclic number.

It is not a de Polignac number, because 49478615 - 2¹⁸ = 49216471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4947857 + ... + 4947866.

It is an arithmetic number, because the mean of its divisors is an integer number (14843586).

Almost surely, 2^49478615 is an apocalyptic number.

49478615 is a deficient number, since it is larger than the sum of its proper divisors (9895729).

49478615 is an equidigital number, since it uses as much as digits as its factorization.

49478615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9895728.

The product of its digits is 241920, while the sum is 44.

The square root of 49478615 is about 7034.1037097842. The cubic root of 49478615 is about 367.1181403864.

The spelling of 49478615 in words is "forty-nine million, four hundred seventy-eight thousand, six hundred fifteen".