70224137 has 2 divisors, whose sum is σ = 70224138. Its totient is φ = 70224136.

The previous prime is 70224131. The next prime is 70224151. The reversal of 70224137 is 73142207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51423241 + 18800896 = 7171^2 + 4336^2 .

It is an emirp because it is prime and its reverse (73142207) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70224137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70224131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35112068 + 35112069.

It is an arithmetic number, because the mean of its divisors is an integer number (35112069).

Almost surely, 2^70224137 is an apocalyptic number.

It is an amenable number.

70224137 is a deficient number, since it is larger than the sum of its proper divisors (1).

70224137 is an equidigital number, since it uses as much as digits as its factorization.

70224137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 70224137 is about 8379.9843078612. The cubic root of 70224137 is about 412.5679339599.

The spelling of 70224137 in words is "seventy million, two hundred twenty-four thousand, one hundred thirty-seven".