48781513 has 12 divisors (see below), whose sum is σ = 54932724. Its totient is φ = 43260800.

The previous prime is 48781511. The next prime is 48781529. The reversal of 48781513 is 31518784.

It can be written as a sum of positive squares in 2 ways, for example, as 11778624 + 37002889 = 3432^2 + 6083^2 .

It is not a de Polignac number, because 48781513 - 2¹ = 48781511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (48781511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45 + ... + 9877.

It is an arithmetic number, because the mean of its divisors is an integer number (4577727).

Almost surely, 2^48781513 is an apocalyptic number.

It is an amenable number.

48781513 is a deficient number, since it is larger than the sum of its proper divisors (6151211).

48781513 is a wasteful number, since it uses less digits than its factorization.

48781513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9896 (or 9885 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 48781513 is about 6984.3763501117. The cubic root of 48781513 is about 365.3858757664.

It can be divided in two parts, 48781 and 513, that added together give a palindrome (49294).

The spelling of 48781513 in words is "forty-eight million, seven hundred eighty-one thousand, five hundred thirteen".