49279561 has 2 divisors, whose sum is σ = 49279562. Its totient is φ = 49279560.

The previous prime is 49279519. The next prime is 49279577. The reversal of 49279561 is 16597294.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44355600 + 4923961 = 6660^2 + 2219^2 .

It is a cyclic number.

It is not a de Polignac number, because 49279561 - 2¹⁵ = 49246793 is a prime.

It is not a weakly prime, because it can be changed into another prime (49279661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24639780 + 24639781.

It is an arithmetic number, because the mean of its divisors is an integer number (24639781).

Almost surely, 2^49279561 is an apocalyptic number.

It is an amenable number.

49279561 is a deficient number, since it is larger than the sum of its proper divisors (1).

49279561 is an equidigital number, since it uses as much as digits as its factorization.

49279561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 43.

The square root of 49279561 is about 7019.9402419109. The cubic root of 49279561 is about 366.6251695003.

The spelling of 49279561 in words is "forty-nine million, two hundred seventy-nine thousand, five hundred sixty-one".