51159348 has 18 divisors (see below), whose sum is σ = 129319554. Its totient is φ = 17053104.

The previous prime is 51159323. The next prime is 51159397. The reversal of 51159348 is 84395115.

It can be written as a sum of positive squares in only one way, i.e., 36505764 + 14653584 = 6042^2 + 3828^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1421093 = 51159348 / (5 + 1 + 1 + 5 + 9 + 3 + 4 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 710511 + ... + 710582.

Almost surely, 2^51159348 is an apocalyptic number.

It is an amenable number.

51159348 is an abundant number, since it is smaller than the sum of its proper divisors (78160206).

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

51159348 is a wasteful number, since it uses less digits than its factorization.

51159348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421103 (or 1421098 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 51159348 is about 7152.5763190615. The cubic root of 51159348 is about 371.2288046941.

The spelling of 51159348 in words is "fifty-one million, one hundred fifty-nine thousand, three hundred forty-eight".