70216541 has 2 divisors, whose sum is σ = 70216542. Its totient is φ = 70216540.

The previous prime is 70216501. The next prime is 70216567. The reversal of 70216541 is 14561207.

It is an a-pointer prime, because the next prime (70216567) can be obtained adding 70216541 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68128516 + 2088025 = 8254^2 + 1445^2 .

It is an emirp because it is prime and its reverse (14561207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70216541 - 2¹⁸ = 69954397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70216541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70216501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35108270 + 35108271.

It is an arithmetic number, because the mean of its divisors is an integer number (35108271).

Almost surely, 2^70216541 is an apocalyptic number.

It is an amenable number.

70216541 is a deficient number, since it is larger than the sum of its proper divisors (1).

70216541 is an equidigital number, since it uses as much as digits as its factorization.

70216541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 70216541 is about 8379.5310727988. The cubic root of 70216541 is about 412.5530578828.

Adding to 70216541 its reverse (14561207), we get a palindrome (84777748).

The spelling of 70216541 in words is "seventy million, two hundred sixteen thousand, five hundred forty-one".