51068137 has 4 divisors (see below), whose sum is σ = 51830416. Its totient is φ = 50305860.

The previous prime is 51068131. The next prime is 51068167. The reversal of 51068137 is 73186015.

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 51068137 - 2⁷ = 51068009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51068099 and 51068108.

It is not an unprimeable number, because it can be changed into a prime (51068131) 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, 381039 + ... + 381172.

It is an arithmetic number, because the mean of its divisors is an integer number (12957604).

Almost surely, 2^51068137 is an apocalyptic number.

It is an amenable number.

51068137 is a deficient number, since it is larger than the sum of its proper divisors (762279).

51068137 is an equidigital number, since it uses as much as digits as its factorization.

51068137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762278.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 51068137 is about 7146.1973804255. The cubic root of 51068137 is about 371.0080545956.

The spelling of 51068137 in words is "fifty-one million, sixty-eight thousand, one hundred thirty-seven".