48139513 has 2 divisors, whose sum is σ = 48139514. Its totient is φ = 48139512.

The previous prime is 48139501. The next prime is 48139517. The reversal of 48139513 is 31593184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42341049 + 5798464 = 6507^2 + 2408^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48139513 is a prime.

It is not a weakly prime, because it can be changed into another prime (48139517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24069756 + 24069757.

It is an arithmetic number, because the mean of its divisors is an integer number (24069757).

Almost surely, 2^48139513 is an apocalyptic number.

It is an amenable number.

48139513 is a deficient number, since it is larger than the sum of its proper divisors (1).

48139513 is an equidigital number, since it uses as much as digits as its factorization.

48139513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 34.

The square root of 48139513 is about 6938.2644083373. The cubic root of 48139513 is about 363.7758779116.

The spelling of 48139513 in words is "forty-eight million, one hundred thirty-nine thousand, five hundred thirteen".