51619712 has 32 divisors (see below), whose sum is σ = 106161600. Its totient is φ = 24975360.

The previous prime is 51619703. The next prime is 51619717. The reversal of 51619712 is 21791615.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51619717) 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, 2537 + ... + 10472.

It is an arithmetic number, because the mean of its divisors is an integer number (3317550).

Almost surely, 2^51619712 is an apocalyptic number.

It is an amenable number.

51619712 is an abundant number, since it is smaller than the sum of its proper divisors (54541888).

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

51619712 is a wasteful number, since it uses less digits than its factorization.

51619712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13054 (or 13042 counting only the distinct ones).

The product of its digits is 3780, while the sum is 32.

The square root of 51619712 is about 7184.6859360726. The cubic root of 51619712 is about 372.3389980313.

The spelling of 51619712 in words is "fifty-one million, six hundred nineteen thousand, seven hundred twelve".