51554859 has 8 divisors (see below), whose sum is σ = 68909520. Its totient is φ = 34285056.

The previous prime is 51554813. The next prime is 51554879. The reversal of 51554859 is 95845515.

It is a happy number.

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

It is not a de Polignac number, because 51554859 - 2¹⁷ = 51423787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51554859.

It is not an unprimeable number, because it can be changed into a prime (51554879) 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, 19782 + ... + 22235.

It is an arithmetic number, because the mean of its divisors is an integer number (8613690).

Almost surely, 2^51554859 is an apocalyptic number.

51554859 is a deficient number, since it is larger than the sum of its proper divisors (17354661).

51554859 is a wasteful number, since it uses less digits than its factorization.

51554859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42429.

The product of its digits is 180000, while the sum is 42.

The square root of 51554859 is about 7180.1712375124. The cubic root of 51554859 is about 372.1830019351.

The spelling of 51554859 in words is "fifty-one million, five hundred fifty-four thousand, eight hundred fifty-nine".