70505401 has 2 divisors, whose sum is σ = 70505402. Its totient is φ = 70505400.

The previous prime is 70505399. The next prime is 70505417. The reversal of 70505401 is 10450507.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37454400 + 33051001 = 6120^2 + 5749^2 .

It is an emirp because it is prime and its reverse (10450507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70505401 - 2¹ = 70505399 is a prime.

Together with 70505399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (70503401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35252700 + 35252701.

It is an arithmetic number, because the mean of its divisors is an integer number (35252701).

Almost surely, 2^70505401 is an apocalyptic number.

It is an amenable number.

70505401 is a deficient number, since it is larger than the sum of its proper divisors (1).

70505401 is an equidigital number, since it uses as much as digits as its factorization.

70505401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 70505401 is about 8396.7494305832. The cubic root of 70505401 is about 413.1180103917.

Adding to 70505401 its reverse (10450507), we get a palindrome (80955908).

The spelling of 70505401 in words is "seventy million, five hundred five thousand, four hundred one".