518472901 has 8 divisors (see below), whose sum is σ = 520624664. Its totient is φ = 516326400.

The previous prime is 518472859. The next prime is 518472917. The reversal of 518472901 is 109274815.

It is a Cunningham number, because it is equal to 22770²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 518472900 = 1^2 + 22770^2 .

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 518472901 - 2¹⁵ = 518440133 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 (518472301) 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, 431101 + ... + 432301.

It is an arithmetic number, because the mean of its divisors is an integer number (65078083).

Almost surely, 2^518472901 is an apocalyptic number.

It is an amenable number.

518472901 is a deficient number, since it is larger than the sum of its proper divisors (2151763).

518472901 is a wasteful number, since it uses less digits than its factorization.

518472901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 518472901 is about 22770.0000219587. Note that the first 4 decimals coincide. The cubic root of 518472901 is about 803.3571944536.

The spelling of 518472901 in words is "five hundred eighteen million, four hundred seventy-two thousand, nine hundred one".