51550080 has 64 divisors (see below), whose sum is σ = 164322000. Its totient is φ = 13746176.

The previous prime is 51550073. The next prime is 51550091. The reversal of 51550080 is 8005515.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51550080.

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, 11505 + ... + 15344.

Almost surely, 2^51550080 is an apocalyptic number.

It is an amenable number.

51550080 is an abundant number, since it is smaller than the sum of its proper divisors (112771920).

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

51550080 is a wasteful number, since it uses less digits than its factorization.

51550080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26871 (or 26859 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 51550080 is about 7179.8384382937. The cubic root of 51550080 is about 372.1715014509.

Adding to 51550080 its reverse (8005515), we get a palindrome (59555595).

The spelling of 51550080 in words is "fifty-one million, five hundred fifty thousand, eighty".