51000619 has 2 divisors, whose sum is σ = 51000620. Its totient is φ = 51000618.

The previous prime is 51000571. The next prime is 51000641. The reversal of 51000619 is 91600015.

It is an a-pointer prime, because the next prime (51000641) can be obtained adding 51000619 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51000619 - 2⁷ = 51000491 is a prime.

It is a super-2 number, since 2×51000619² = 5202126276766322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51000619.

It is not a weakly prime, because it can be changed into another prime (51000659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25500309 + 25500310.

It is an arithmetic number, because the mean of its divisors is an integer number (25500310).

Almost surely, 2^51000619 is an apocalyptic number.

51000619 is a deficient number, since it is larger than the sum of its proper divisors (1).

51000619 is an equidigital number, since it uses as much as digits as its factorization.

51000619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 51000619 is about 7141.4717670799. The cubic root of 51000619 is about 370.8444772591.

The spelling of 51000619 in words is "fifty-one million, six hundred nineteen", and thus it is an aban number.