51589478 has 8 divisors (see below), whose sum is σ = 77465280. Its totient is φ = 25767720.

The previous prime is 51589477. The next prime is 51589481. The reversal of 51589478 is 87498515.

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

It is a super-2 number, since 2×51589478² = 5322948480624968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51589477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11033 + ... + 14996.

It is an arithmetic number, because the mean of its divisors is an integer number (9683160).

Almost surely, 2^51589478 is an apocalyptic number.

51589478 is a deficient number, since it is larger than the sum of its proper divisors (25875802).

51589478 is a wasteful number, since it uses less digits than its factorization.

51589478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27022.

The product of its digits is 403200, while the sum is 47.

The square root of 51589478 is about 7182.5815693245. The cubic root of 51589478 is about 372.2662900459.

The spelling of 51589478 in words is "fifty-one million, five hundred eighty-nine thousand, four hundred seventy-eight".