87505049 has 8 divisors (see below), whose sum is σ = 89515848. Its totient is φ = 85512960.

The previous prime is 87505039. The next prime is 87505057. The reversal of 87505049 is 94050578.

It can be written as a sum of positive squares in 4 ways, for example, as 10679824 + 76825225 = 3268^2 + 8765^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87505049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87505009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5009 + ... + 14145.

It is an arithmetic number, because the mean of its divisors is an integer number (11189481).

Almost surely, 2^87505049 is an apocalyptic number.

It is an amenable number.

87505049 is a deficient number, since it is larger than the sum of its proper divisors (2010799).

87505049 is a wasteful number, since it uses less digits than its factorization.

87505049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9355.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 87505049 is about 9354.4133434438. The cubic root of 87505049 is about 443.9605398067.

It can be divided in two parts, 8 and 7505049, that added together give a palindrome (7505057).

The spelling of 87505049 in words is "eighty-seven million, five hundred five thousand, forty-nine".