51545878 has 8 divisors (see below), whose sum is σ = 77356800. Its totient is φ = 25760280.

The previous prime is 51545873. The next prime is 51545899. The reversal of 51545878 is 87854515.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51545873) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 43 + ... + 10153.

It is an arithmetic number, because the mean of its divisors is an integer number (9669600).

Almost surely, 2^51545878 is an apocalyptic number.

51545878 is a deficient number, since it is larger than the sum of its proper divisors (25810922).

51545878 is a wasteful number, since it uses less digits than its factorization.

51545878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12662.

The product of its digits is 224000, while the sum is 43.

The square root of 51545878 is about 7179.5458073614. The cubic root of 51545878 is about 372.1613889082.

The spelling of 51545878 in words is "fifty-one million, five hundred forty-five thousand, eight hundred seventy-eight".