49216815 has 20 divisors (see below), whose sum is σ = 88226424. Its totient is φ = 26248752.

The previous prime is 49216801. The next prime is 49216829. The reversal of 49216815 is 51861294.

49216815 is a `hidden beast` number, since 492 + 168 + 1 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (49216801) and next prime (49216829).

It is not a de Polignac number, because 49216815 - 2¹³ = 49208623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49216815.

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 19 ways as a sum of consecutive naturals, for example, 60357 + ... + 61166.

Almost surely, 2^49216815 is an apocalyptic number.

49216815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

49216815 is a deficient number, since it is larger than the sum of its proper divisors (39009609).

49216815 is a wasteful number, since it uses less digits than its factorization.

49216815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121540 (or 121531 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 49216815 is about 7015.4696920449. The cubic root of 49216815 is about 366.4694995981.

The spelling of 49216815 in words is "forty-nine million, two hundred sixteen thousand, eight hundred fifteen".