52430218 has 4 divisors (see below), whose sum is σ = 78645330. Its totient is φ = 26215108.

The previous prime is 52430153. The next prime is 52430219. The reversal of 52430218 is 81203425.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32867289 + 19562929 = 5733^2 + 4423^2 .

It is a junction number, because it is equal to n+sod(n) for n = 52430192 and 52430201.

It is not an unprimeable number, because it can be changed into a prime (52430219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13107553 + ... + 13107556.

Almost surely, 2^52430218 is an apocalyptic number.

52430218 is a deficient number, since it is larger than the sum of its proper divisors (26215112).

52430218 is a wasteful number, since it uses less digits than its factorization.

52430218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26215111.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 52430218 is about 7240.8713564046. The cubic root of 52430218 is about 374.2776446935.

The spelling of 52430218 in words is "fifty-two million, four hundred thirty thousand, two hundred eighteen".