48781261 has 2 divisors, whose sum is σ = 48781262. Its totient is φ = 48781260.

The previous prime is 48781247. The next prime is 48781289. The reversal of 48781261 is 16218784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36072036 + 12709225 = 6006^2 + 3565^2 .

It is a cyclic number.

It is not a de Polignac number, because 48781261 - 2⁹ = 48780749 is a prime.

It is a super-2 number, since 2×48781261² = 4759222849500242, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 48781261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48781361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24390630 + 24390631.

It is an arithmetic number, because the mean of its divisors is an integer number (24390631).

Almost surely, 2^48781261 is an apocalyptic number.

48781261 is the 3124-th centered decagonal number.

It is an amenable number.

48781261 is a deficient number, since it is larger than the sum of its proper divisors (1).

48781261 is an equidigital number, since it uses as much as digits as its factorization.

48781261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 37.

The square root of 48781261 is about 6984.3583098235. The cubic root of 48781261 is about 365.3852465840.

The spelling of 48781261 in words is "forty-eight million, seven hundred eighty-one thousand, two hundred sixty-one".