51241666 has 16 divisors (see below), whose sum is σ = 90872640. Its totient is φ = 21203280.

The previous prime is 51241657. The next prime is 51241669. The reversal of 51241666 is 66614215.

It is not an unprimeable number, because it can be changed into a prime (51241669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62700 + ... + 63511.

It is an arithmetic number, because the mean of its divisors is an integer number (5679540).

Almost surely, 2^51241666 is an apocalyptic number.

51241666 is a deficient number, since it is larger than the sum of its proper divisors (39630974).

51241666 is a wasteful number, since it uses less digits than its factorization.

51241666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126249.

The product of its digits is 8640, while the sum is 31.

The square root of 51241666 is about 7158.3284361644. The cubic root of 51241666 is about 371.4278066905.

The spelling of 51241666 in words is "fifty-one million, two hundred forty-one thousand, six hundred sixty-six".