51193212 has 24 divisors (see below), whose sum is σ = 136515456. Its totient is φ = 14626608.

The previous prime is 51193211. The next prime is 51193217. The reversal of 51193212 is 21239115.

51193212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51193211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304638 + ... + 304805.

It is an arithmetic number, because the mean of its divisors is an integer number (5688144).

Almost surely, 2^51193212 is an apocalyptic number.

It is an amenable number.

51193212 is an abundant number, since it is smaller than the sum of its proper divisors (85322244).

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

51193212 is a wasteful number, since it uses less digits than its factorization.

51193212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609457 (or 609455 counting only the distinct ones).

The product of its digits is 540, while the sum is 24.

The square root of 51193212 is about 7154.9431863572. The cubic root of 51193212 is about 371.3106960132.

The spelling of 51193212 in words is "fifty-one million, one hundred ninety-three thousand, two hundred twelve".