51464389 has 16 divisors (see below), whose sum is σ = 57044736. Its totient is φ = 46220800.

The previous prime is 51464383. The next prime is 51464401. The reversal of 51464389 is 98346415.

It is a cyclic number.

It is not a de Polignac number, because 51464389 - 2⁹ = 51463877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51464383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31974 + ... + 33544.

It is an arithmetic number, because the mean of its divisors is an integer number (3565296).

Almost surely, 2^51464389 is an apocalyptic number.

It is an amenable number.

51464389 is a deficient number, since it is larger than the sum of its proper divisors (5580347).

51464389 is a wasteful number, since it uses less digits than its factorization.

51464389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676.

The product of its digits is 103680, while the sum is 40.

The square root of 51464389 is about 7173.8684822068. The cubic root of 51464389 is about 371.9651685312.

The spelling of 51464389 in words is "fifty-one million, four hundred sixty-four thousand, three hundred eighty-nine".