51212093 has 8 divisors (see below), whose sum is σ = 53990400. Its totient is φ = 48504240.

The previous prime is 51212081. The next prime is 51212101. The reversal of 51212093 is 39021215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51212093 - 2²⁰ = 50163517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51217093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16118 + ... + 19031.

It is an arithmetic number, because the mean of its divisors is an integer number (6748800).

Almost surely, 2^51212093 is an apocalyptic number.

It is an amenable number.

51212093 is a deficient number, since it is larger than the sum of its proper divisors (2778307).

51212093 is a wasteful number, since it uses less digits than its factorization.

51212093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35227.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 51212093 is about 7156.2625021725. The cubic root of 51212093 is about 371.3563391448.

The spelling of 51212093 in words is "fifty-one million, two hundred twelve thousand, ninety-three".