51321054 has 16 divisors (see below), whose sum is σ = 102712320. Its totient is φ = 17095320.

The previous prime is 51321041. The next prime is 51321077. The reversal of 51321054 is 45012315.

It is a self number, because there is not a number n which added to its sum of digits gives 51321054.

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, 15789 + ... + 18759.

It is an arithmetic number, because the mean of its divisors is an integer number (6419520).

Almost surely, 2^51321054 is an apocalyptic number.

51321054 is an abundant number, since it is smaller than the sum of its proper divisors (51391266).

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

51321054 is a wasteful number, since it uses less digits than its factorization.

51321054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5855.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51321054 is about 7163.8714393825. The cubic root of 51321054 is about 371.6195236936.

Adding to 51321054 its reverse (45012315), we get a palindrome (96333369).

The spelling of 51321054 in words is "fifty-one million, three hundred twenty-one thousand, fifty-four".