51819006 has 16 divisors (see below), whose sum is σ = 105185664. Its totient is φ = 17015064.

The previous prime is 51818971. The next prime is 51819013. The reversal of 51819006 is 60091815.

It is a happy 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, 64050 + ... + 64853.

It is an arithmetic number, because the mean of its divisors is an integer number (6574104).

Almost surely, 2^51819006 is an apocalyptic number.

51819006 is an abundant number, since it is smaller than the sum of its proper divisors (53366658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51819006 is a wasteful number, since it uses less digits than its factorization.

51819006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128975.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 51819006 is about 7198.5419356978. The cubic root of 51819006 is about 372.8175596287.

The spelling of 51819006 in words is "fifty-one million, eight hundred nineteen thousand, six".