51465605 has 8 divisors (see below), whose sum is σ = 64444032. Its totient is φ = 39382288.

The previous prime is 51465599. The next prime is 51465649. The reversal of 51465605 is 50656415.

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 51465605 - 2⁶ = 51465541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223649 + ... + 223878.

It is an arithmetic number, because the mean of its divisors is an integer number (8055504).

Almost surely, 2^51465605 is an apocalyptic number.

It is an amenable number.

51465605 is a deficient number, since it is larger than the sum of its proper divisors (12978427).

51465605 is a wasteful number, since it uses less digits than its factorization.

51465605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447555.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 51465605 is about 7173.9532337478. The cubic root of 51465605 is about 371.9680981044.

The spelling of 51465605 in words is "fifty-one million, four hundred sixty-five thousand, six hundred five".