51805468 has 72 divisors (see below), whose sum is σ = 111477744. Its totient is φ = 20755200.

The previous prime is 51805463. The next prime is 51805483. The reversal of 51805468 is 86450815.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51805463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1102221 + ... + 1102267.

It is an arithmetic number, because the mean of its divisors is an integer number (1548302).

Almost surely, 2^51805468 is an apocalyptic number.

It is an amenable number.

51805468 is an abundant number, since it is smaller than the sum of its proper divisors (59672276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51805468 is a wasteful number, since it uses less digits than its factorization.

51805468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 51805468 is about 7197.6015449593. The cubic root of 51805468 is about 372.7850899223.

It can be divided in two parts, 5180 and 5468, that added together give a cube (10648 = 22³).

The spelling of 51805468 in words is "fifty-one million, eight hundred five thousand, four hundred sixty-eight".