51434519 has 4 divisors (see below), whose sum is σ = 52054296. Its totient is φ = 50814744.

The previous prime is 51434491. The next prime is 51434597. The reversal of 51434519 is 91543415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91543415 = 5 ⋅18308683.

It is a cyclic number.

It is not a de Polignac number, because 51434519 - 2⁸ = 51434263 is a prime.

It is a super-2 number, since 2×51434519² = 5291019489522722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51434599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309764 + ... + 309929.

It is an arithmetic number, because the mean of its divisors is an integer number (13013574).

Almost surely, 2^51434519 is an apocalyptic number.

51434519 is a deficient number, since it is larger than the sum of its proper divisors (619777).

51434519 is an equidigital number, since it uses as much as digits as its factorization.

51434519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619776.

The product of its digits is 10800, while the sum is 32.

The square root of 51434519 is about 7171.7863186238. The cubic root of 51434519 is about 371.8931915777.

The spelling of 51434519 in words is "fifty-one million, four hundred thirty-four thousand, five hundred nineteen".