49666401 has 12 divisors (see below), whose sum is σ = 75960612. Its totient is φ = 31163136.

The previous prime is 49666373. The next prime is 49666411. The reversal of 49666401 is 10466694.

It can be written as a sum of positive squares in 2 ways, for example, as 28515600 + 21150801 = 5340^2 + 4599^2 .

It is not a de Polignac number, because 49666401 - 2⁵ = 49666369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49666411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162156 + ... + 162461.

It is an arithmetic number, because the mean of its divisors is an integer number (6330051).

Almost surely, 2^49666401 is an apocalyptic number.

It is an amenable number.

49666401 is a deficient number, since it is larger than the sum of its proper divisors (26294211).

49666401 is a wasteful number, since it uses less digits than its factorization.

49666401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324640 (or 324637 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 49666401 is about 7047.4393221936. The cubic root of 49666401 is about 367.5819947545.

The spelling of 49666401 in words is "forty-nine million, six hundred sixty-six thousand, four hundred one".