51819005 has 8 divisors (see below), whose sum is σ = 71066112. Its totient is φ = 35533008.

The previous prime is 51818971. The next prime is 51819013. The reversal of 51819005 is 50091815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51819005 - 2¹⁰ = 51817981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740237 + ... + 740306.

It is an arithmetic number, because the mean of its divisors is an integer number (8883264).

Almost surely, 2^51819005 is an apocalyptic number.

It is an amenable number.

51819005 is a deficient number, since it is larger than the sum of its proper divisors (19247107).

51819005 is a wasteful number, since it uses less digits than its factorization.

51819005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480555.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 51819005 is about 7198.5418662393. The cubic root of 51819005 is about 372.8175572305.

The spelling of 51819005 in words is "fifty-one million, eight hundred nineteen thousand, five".