53225218 has 4 divisors (see below), whose sum is σ = 79837830. Its totient is φ = 26612608.

The previous prime is 53225201. The next prime is 53225219. The reversal of 53225218 is 81252235.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81252235 = 5 ⋅16250447.

It can be written as a sum of positive squares in only one way, i.e., 46553329 + 6671889 = 6823^2 + 2583^2 .

It is a super-2 number, since 2×53225218² = 5665847662295048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53225219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13306303 + ... + 13306306.

Almost surely, 2^53225218 is an apocalyptic number.

53225218 is a deficient number, since it is larger than the sum of its proper divisors (26612612).

53225218 is a wasteful number, since it uses less digits than its factorization.

53225218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26612611.

The product of its digits is 4800, while the sum is 28.

The square root of 53225218 is about 7295.5615273946. The cubic root of 53225218 is about 376.1598884284.

It can be divided in two parts, 5 and 3225218, that added together give a palindrome (3225223).

The spelling of 53225218 in words is "fifty-three million, two hundred twenty-five thousand, two hundred eighteen".