49315591 has 4 divisors (see below), whose sum is σ = 53109112. Its totient is φ = 45522072.

The previous prime is 49315577. The next prime is 49315597. The reversal of 49315591 is 19551394.

It is a happy number.

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 49315591 - 2¹³ = 49307399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49315591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49315597) 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, 1896741 + ... + 1896766.

It is an arithmetic number, because the mean of its divisors is an integer number (13277278).

Almost surely, 2^49315591 is an apocalyptic number.

49315591 is a deficient number, since it is larger than the sum of its proper divisors (3793521).

49315591 is a wasteful number, since it uses less digits than its factorization.

49315591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793520.

The product of its digits is 24300, while the sum is 37.

The square root of 49315591 is about 7022.5060341733. The cubic root of 49315591 is about 366.7144985351.

The spelling of 49315591 in words is "forty-nine million, three hundred fifteen thousand, five hundred ninety-one".