49145513 has 2 divisors, whose sum is σ = 49145514. Its totient is φ = 49145512.

The previous prime is 49145501. The next prime is 49145519. The reversal of 49145513 is 31554194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30162064 + 18983449 = 5492^2 + 4357^2 .

It is a cyclic number.

It is not a de Polignac number, because 49145513 - 2⁶ = 49145449 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 49145513.

It is not a weakly prime, because it can be changed into another prime (49145519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24572756 + 24572757.

It is an arithmetic number, because the mean of its divisors is an integer number (24572757).

Almost surely, 2^49145513 is an apocalyptic number.

It is an amenable number.

49145513 is a deficient number, since it is larger than the sum of its proper divisors (1).

49145513 is an equidigital number, since it uses as much as digits as its factorization.

49145513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 49145513 is about 7010.3860806663. The cubic root of 49145513 is about 366.2924419747.

The spelling of 49145513 in words is "forty-nine million, one hundred forty-five thousand, five hundred thirteen".