51893913 has 4 divisors (see below), whose sum is σ = 69191888. Its totient is φ = 34595940.

The previous prime is 51893903. The next prime is 51893917. The reversal of 51893913 is 31939815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51893913 - 2¹⁶ = 51828377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51893917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8648983 + ... + 8648988.

It is an arithmetic number, because the mean of its divisors is an integer number (17297972).

Almost surely, 2^51893913 is an apocalyptic number.

It is an amenable number.

51893913 is a deficient number, since it is larger than the sum of its proper divisors (17297975).

51893913 is a wasteful number, since it uses less digits than its factorization.

51893913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17297974.

The product of its digits is 29160, while the sum is 39.

The square root of 51893913 is about 7203.7429854208. The cubic root of 51893913 is about 372.9971153646.

The spelling of 51893913 in words is "fifty-one million, eight hundred ninety-three thousand, nine hundred thirteen".