51662505 has 8 divisors (see below), whose sum is σ = 82660032. Its totient is φ = 27553328.

The previous prime is 51662497. The next prime is 51662519. The reversal of 51662505 is 50526615.

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 51662505 - 2³ = 51662497 is a prime.

It is a Curzon number.

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, 1722069 + ... + 1722098.

It is an arithmetic number, because the mean of its divisors is an integer number (10332504).

Almost surely, 2^51662505 is an apocalyptic number.

It is an amenable number.

51662505 is a deficient number, since it is larger than the sum of its proper divisors (30997527).

51662505 is a wasteful number, since it uses less digits than its factorization.

51662505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444175.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 51662505 is about 7187.6633894472. The cubic root of 51662505 is about 372.4418599108.

The spelling of 51662505 in words is "fifty-one million, six hundred sixty-two thousand, five hundred five".