49077815 has 4 divisors (see below), whose sum is σ = 58893384. Its totient is φ = 39262248.

The previous prime is 49077811. The next prime is 49077857. The reversal of 49077815 is 51877094.

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 49077815 - 2² = 49077811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49077811) 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 3 ways as a sum of consecutive naturals, for example, 4907777 + ... + 4907786.

It is an arithmetic number, because the mean of its divisors is an integer number (14723346).

Almost surely, 2^49077815 is an apocalyptic number.

49077815 is a deficient number, since it is larger than the sum of its proper divisors (9815569).

49077815 is an equidigital number, since it uses as much as digits as its factorization.

49077815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9815568.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 49077815 is about 7005.5560093400. The cubic root of 49077815 is about 366.1241752702.

The spelling of 49077815 in words is "forty-nine million, seventy-seven thousand, eight hundred fifteen".