51405059 has 8 divisors (see below), whose sum is σ = 54659088. Its totient is φ = 48176640.

The previous prime is 51405049. The next prime is 51405073. The reversal of 51405059 is 95050415.

51405059 is nontrivially palindromic in base 8.

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

It is not a de Polignac number, because 51405059 - 2¹⁶ = 51339523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51405049) 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, 2177 + ... + 10370.

It is an arithmetic number, because the mean of its divisors is an integer number (6832386).

Almost surely, 2^51405059 is an apocalyptic number.

51405059 is a deficient number, since it is larger than the sum of its proper divisors (3254029).

51405059 is a wasteful number, since it uses less digits than its factorization.

51405059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12805.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 51405059 is about 7169.7321428349. The cubic root of 51405059 is about 371.8221752897.

The spelling of 51405059 in words is "fifty-one million, four hundred five thousand, fifty-nine".