51362389 has 8 divisors (see below), whose sum is σ = 58567320. Its totient is φ = 44622336.

The previous prime is 51362371. The next prime is 51362407. The reversal of 51362389 is 98326315.

It is an interprime number because it is at equal distance from previous prime (51362371) and next prime (51362407).

It can be written as a sum of positive squares in 4 ways, for example, as 4986289 + 46376100 = 2233^2 + 6810^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51362389 - 2⁵ = 51362357 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 (51362329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115984 + ... + 116425.

It is an arithmetic number, because the mean of its divisors is an integer number (7320915).

Almost surely, 2^51362389 is an apocalyptic number.

It is an amenable number.

51362389 is a deficient number, since it is larger than the sum of its proper divisors (7204931).

51362389 is a wasteful number, since it uses less digits than its factorization.

51362389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232439.

The product of its digits is 38880, while the sum is 37.

The square root of 51362389 is about 7166.7558211509. The cubic root of 51362389 is about 371.7192668443.

The spelling of 51362389 in words is "fifty-one million, three hundred sixty-two thousand, three hundred eighty-nine".