51893091 has 12 divisors (see below), whose sum is σ = 75170160. Its totient is φ = 34496880.

The previous prime is 51893081. The next prime is 51893111. The reversal of 51893091 is 19039815.

It is a happy number.

It is not a de Polignac number, because 51893091 - 2⁹ = 51892579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51893021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4800 + ... + 11261.

It is an arithmetic number, because the mean of its divisors is an integer number (6264180).

Almost surely, 2^51893091 is an apocalyptic number.

51893091 is a deficient number, since it is larger than the sum of its proper divisors (23277069).

51893091 is a wasteful number, since it uses less digits than its factorization.

51893091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16426 (or 16423 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 51893091 is about 7203.6859315214. The cubic root of 51893091 is about 372.9951459284.

The spelling of 51893091 in words is "fifty-one million, eight hundred ninety-three thousand, ninety-one".