49215599 has 4 divisors (see below), whose sum is σ = 49231800. Its totient is φ = 49199400.

The previous prime is 49215557. The next prime is 49215601. The reversal of 49215599 is 99551294.

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 49215599 - 2¹⁶ = 49150063 is a prime.

It is a Duffinian number.

Its product of digits (145800) is a multiple of the sum of its prime divisors (16200).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49211599) 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, 2024 + ... + 10125.

It is an arithmetic number, because the mean of its divisors is an integer number (12307950).

Almost surely, 2^49215599 is an apocalyptic number.

49215599 is a deficient number, since it is larger than the sum of its proper divisors (16201).

49215599 is a wasteful number, since it uses less digits than its factorization.

49215599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16200.

The product of its digits is 145800, while the sum is 44.

The square root of 49215599 is about 7015.3830258939. The cubic root of 49215599 is about 366.4664814523.

The spelling of 49215599 in words is "forty-nine million, two hundred fifteen thousand, five hundred ninety-nine".