51440119 has 4 divisors (see below), whose sum is σ = 51510096. Its totient is φ = 51370144.

The previous prime is 51440111. The next prime is 51440149. The reversal of 51440119 is 91104415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51440119 - 2³ = 51440111 is a prime.

It is a super-2 number, since 2×51440119² = 5292171685468322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51440093 and 51440102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51440111) 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, 33874 + ... + 35359.

It is an arithmetic number, because the mean of its divisors is an integer number (12877524).

Almost surely, 2^51440119 is an apocalyptic number.

51440119 is a deficient number, since it is larger than the sum of its proper divisors (69977).

51440119 is an equidigital number, since it uses as much as digits as its factorization.

51440119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69976.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 51440119 is about 7172.1767267685. The cubic root of 51440119 is about 371.9066878725.

The spelling of 51440119 in words is "fifty-one million, four hundred forty thousand, one hundred nineteen".