49135579 has 2 divisors, whose sum is σ = 49135580. Its totient is φ = 49135578.

The previous prime is 49135571. The next prime is 49135607. The reversal of 49135579 is 97553194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49135579 - 2³ = 49135571 is a prime.

It is not a weakly prime, because it can be changed into another prime (49135571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24567789 + 24567790.

It is an arithmetic number, because the mean of its divisors is an integer number (24567790).

Almost surely, 2^49135579 is an apocalyptic number.

49135579 is a deficient number, since it is larger than the sum of its proper divisors (1).

49135579 is an equidigital number, since it uses as much as digits as its factorization.

49135579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 43.

The square root of 49135579 is about 7009.6775246797. The cubic root of 49135579 is about 366.2677602076.

The spelling of 49135579 in words is "forty-nine million, one hundred thirty-five thousand, five hundred seventy-nine".