70048921 has 2 divisors, whose sum is σ = 70048922. Its totient is φ = 70048920.

The previous prime is 70048919. The next prime is 70048931. The reversal of 70048921 is 12984007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66585600 + 3463321 = 8160^2 + 1861^2 .

It is an emirp because it is prime and its reverse (12984007) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70048921 - 2¹ = 70048919 is a prime.

Together with 70048919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (70048931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35024460 + 35024461.

It is an arithmetic number, because the mean of its divisors is an integer number (35024461).

Almost surely, 2^70048921 is an apocalyptic number.

It is an amenable number.

70048921 is a deficient number, since it is larger than the sum of its proper divisors (1).

70048921 is an equidigital number, since it uses as much as digits as its factorization.

70048921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 70048921 is about 8369.5233436558. The cubic root of 70048921 is about 412.2245159086.

The spelling of 70048921 in words is "seventy million, forty-eight thousand, nine hundred twenty-one".