51545855 has 8 divisors (see below), whose sum is σ = 62468064. Its totient is φ = 40828000.

The previous prime is 51545849. The next prime is 51545873. The reversal of 51545855 is 55854515.

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

It is not a de Polignac number, because 51545855 - 2¹² = 51541759 is a prime.

It is a Duffinian number.

It is a congruent 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, 50531 + ... + 51540.

It is an arithmetic number, because the mean of its divisors is an integer number (7808508).

Almost surely, 2^51545855 is an apocalyptic number.

51545855 is a deficient number, since it is larger than the sum of its proper divisors (10922209).

51545855 is a wasteful number, since it uses less digits than its factorization.

51545855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102177.

The product of its digits is 100000, while the sum is 38.

The square root of 51545855 is about 7179.5442055885. The cubic root of 51545855 is about 372.1613335549.

The spelling of 51545855 in words is "fifty-one million, five hundred forty-five thousand, eight hundred fifty-five".