70052218 has 4 divisors (see below), whose sum is σ = 105078330. Its totient is φ = 35026108.

The previous prime is 70052207. The next prime is 70052233. The reversal of 70052218 is 81225007.

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., 65399569 + 4652649 = 8087^2 + 2157^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70052192 and 70052201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17513053 + ... + 17513056.

Almost surely, 2^70052218 is an apocalyptic number.

70052218 is a deficient number, since it is larger than the sum of its proper divisors (35026112).

70052218 is a wasteful number, since it uses less digits than its factorization.

70052218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35026111.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 70052218 is about 8369.7203059601. The cubic root of 70052218 is about 412.2309832121.

The spelling of 70052218 in words is "seventy million, fifty-two thousand, two hundred eighteen".