51491614 has 16 divisors (see below), whose sum is σ = 79043040. Its totient is φ = 25150720.

The previous prime is 51491603. The next prime is 51491621. The reversal of 51491614 is 41619415.

51491614 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14442 + ... + 17650.

It is an arithmetic number, because the mean of its divisors is an integer number (4940190).

Almost surely, 2^51491614 is an apocalyptic number.

51491614 is a deficient number, since it is larger than the sum of its proper divisors (27551426).

51491614 is a wasteful number, since it uses less digits than its factorization.

51491614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395.

The product of its digits is 4320, while the sum is 31.

The square root of 51491614 is about 7175.7657431106. The cubic root of 51491614 is about 372.0307476416.

The spelling of 51491614 in words is "fifty-one million, four hundred ninety-one thousand, six hundred fourteen".