51213054 has 16 divisors (see below), whose sum is σ = 105730560. Its totient is φ = 16520280.

The previous prime is 51213049. The next prime is 51213067. The reversal of 51213054 is 45031215.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51213054.

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, 137484 + ... + 137855.

It is an arithmetic number, because the mean of its divisors is an integer number (6608160).

Almost surely, 2^51213054 is an apocalyptic number.

51213054 is an abundant number, since it is smaller than the sum of its proper divisors (54517506).

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

51213054 is a wasteful number, since it uses less digits than its factorization.

51213054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275375.

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

The square root of 51213054 is about 7156.3296458450. The cubic root of 51213054 is about 371.3586619765.

Adding to 51213054 its reverse (45031215), we get a palindrome (96244269).

The spelling of 51213054 in words is "fifty-one million, two hundred thirteen thousand, fifty-four".