51319970 has 32 divisors (see below), whose sum is σ = 101183040. Its totient is φ = 18624960.

The previous prime is 51319963. The next prime is 51319993. The reversal of 51319970 is 7991315.

It is a self number, because there is not a number n which added to its sum of digits gives 51319970.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4325 + ... + 11015.

It is an arithmetic number, because the mean of its divisors is an integer number (3161970).

Almost surely, 2^51319970 is an apocalyptic number.

51319970 is a deficient number, since it is larger than the sum of its proper divisors (49863070).

51319970 is a wasteful number, since it uses less digits than its factorization.

51319970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 51319970 is about 7163.7957815672. The cubic root of 51319970 is about 371.6169072339.

The spelling of 51319970 in words is "fifty-one million, three hundred nineteen thousand, nine hundred seventy".