51266663 has 8 divisors (see below), whose sum is σ = 58681728. Its totient is φ = 43874424.

The previous prime is 51266651. The next prime is 51266669. The reversal of 51266663 is 36666215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51266663 - 2¹⁸ = 51004519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51266669) 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, 581 + ... + 10142.

It is an arithmetic number, because the mean of its divisors is an integer number (7335216).

Almost surely, 2^51266663 is an apocalyptic number.

51266663 is a deficient number, since it is larger than the sum of its proper divisors (7415065).

51266663 is a wasteful number, since it uses less digits than its factorization.

51266663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11413.

The product of its digits is 38880, while the sum is 35.

The square root of 51266663 is about 7160.0742314588. The cubic root of 51266663 is about 371.4881942114.

The spelling of 51266663 in words is "fifty-one million, two hundred sixty-six thousand, six hundred sixty-three".