47755649 has 2 divisors, whose sum is σ = 47755650. Its totient is φ = 47755648.

The previous prime is 47755639. The next prime is 47755661. The reversal of 47755649 is 94655774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35188624 + 12567025 = 5932^2 + 3545^2 .

It is a cyclic number.

It is not a de Polignac number, because 47755649 - 2⁴ = 47755633 is a prime.

It is a super-2 number, since 2×47755649² = 4561204022822402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47755639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23877824 + 23877825.

It is an arithmetic number, because the mean of its divisors is an integer number (23877825).

Almost surely, 2^47755649 is an apocalyptic number.

It is an amenable number.

47755649 is a deficient number, since it is larger than the sum of its proper divisors (1).

47755649 is an equidigital number, since it uses as much as digits as its factorization.

47755649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 47.

The square root of 47755649 is about 6910.5462157488. The cubic root of 47755649 is about 362.8063813254.

The spelling of 47755649 in words is "forty-seven million, seven hundred fifty-five thousand, six hundred forty-nine".