70547129 has 2 divisors, whose sum is σ = 70547130. Its totient is φ = 70547128.

The previous prime is 70547117. The next prime is 70547149. The reversal of 70547129 is 92174507.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68227600 + 2319529 = 8260^2 + 1523^2 .

It is an emirp because it is prime and its reverse (92174507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70547129 - 2⁸ = 70546873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70547149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35273564 + 35273565.

It is an arithmetic number, because the mean of its divisors is an integer number (35273565).

Almost surely, 2^70547129 is an apocalyptic number.

It is an amenable number.

70547129 is a deficient number, since it is larger than the sum of its proper divisors (1).

70547129 is an equidigital number, since it uses as much as digits as its factorization.

70547129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 70547129 is about 8399.2338341065. The cubic root of 70547129 is about 413.1994944027.

The spelling of 70547129 in words is "seventy million, five hundred forty-seven thousand, one hundred twenty-nine".