51893761 has 4 divisors (see below), whose sum is σ = 51931072. Its totient is φ = 51856452.

The previous prime is 51893753. The next prime is 51893791. The reversal of 51893761 is 16739815.

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 a cyclic number.

It is not a de Polignac number, because 51893761 - 2³ = 51893753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51893791) 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, 16485 + ... + 19378.

It is an arithmetic number, because the mean of its divisors is an integer number (12982768).

Almost surely, 2^51893761 is an apocalyptic number.

It is an amenable number.

51893761 is a deficient number, since it is larger than the sum of its proper divisors (37311).

51893761 is a wasteful number, since it uses less digits than its factorization.

51893761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37310.

The product of its digits is 45360, while the sum is 40.

The square root of 51893761 is about 7203.7324353421. The cubic root of 51893761 is about 372.9967511882.

The spelling of 51893761 in words is "fifty-one million, eight hundred ninety-three thousand, seven hundred sixty-one".