51662506 has 16 divisors (see below), whose sum is σ = 88989120. Its totient is φ = 22034880.

The previous prime is 51662497. The next prime is 51662519. The reversal of 51662506 is 60526615.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5791 + ... + 11698.

It is an arithmetic number, because the mean of its divisors is an integer number (5561820).

Almost surely, 2^51662506 is an apocalyptic number.

51662506 is a deficient number, since it is larger than the sum of its proper divisors (37326614).

51662506 is a wasteful number, since it uses less digits than its factorization.

51662506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17709.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 51662506 is about 7187.6634590109. The cubic root of 51662506 is about 372.4418623138.

The spelling of 51662506 in words is "fifty-one million, six hundred sixty-two thousand, five hundred six".