51604078 has 16 divisors (see below), whose sum is σ = 83117664. Its totient is φ = 23941120.

The previous prime is 51604043. The next prime is 51604081. The reversal of 51604078 is 87040615.

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, 8275 + ... + 13102.

It is an arithmetic number, because the mean of its divisors is an integer number (5194854).

Almost surely, 2^51604078 is an apocalyptic number.

51604078 is a deficient number, since it is larger than the sum of its proper divisors (31513586).

51604078 is a wasteful number, since it uses less digits than its factorization.

51604078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21467.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 51604078 is about 7183.5978450913. The cubic root of 51604078 is about 372.3014042811.

The spelling of 51604078 in words is "fifty-one million, six hundred four thousand, seventy-eight".