49387505 has 4 divisors (see below), whose sum is σ = 59265012. Its totient is φ = 39510000.

The previous prime is 49387501. The next prime is 49387511. The reversal of 49387505 is 50578394.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35129329 + 14258176 = 5927^2 + 3776^2 .

It is not a de Polignac number, because 49387505 - 2² = 49387501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49387501) 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, 4938746 + ... + 4938755.

It is an arithmetic number, because the mean of its divisors is an integer number (14816253).

Almost surely, 2^49387505 is an apocalyptic number.

It is an amenable number.

49387505 is a deficient number, since it is larger than the sum of its proper divisors (9877507).

49387505 is an equidigital number, since it uses as much as digits as its factorization.

49387505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9877506.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 49387505 is about 7027.6244208125. The cubic root of 49387505 is about 366.8926646243.

The spelling of 49387505 in words is "forty-nine million, three hundred eighty-seven thousand, five hundred five".