70252321 has 4 divisors (see below), whose sum is σ = 70278192. Its totient is φ = 70226452.

The previous prime is 70252289. The next prime is 70252333. The reversal of 70252321 is 12325207.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12325207 = 787 ⋅15661.

It is a cyclic number.

It is not a de Polignac number, because 70252321 - 2⁵ = 70252289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70252292 and 70252301.

It is not an unprimeable number, because it can be changed into a prime (70252361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8311 + ... + 14476.

It is an arithmetic number, because the mean of its divisors is an integer number (17569548).

Almost surely, 2^70252321 is an apocalyptic number.

It is an amenable number.

70252321 is a deficient number, since it is larger than the sum of its proper divisors (25871).

70252321 is a wasteful number, since it uses less digits than its factorization.

70252321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25870.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 70252321 is about 8381.6657652283. The cubic root of 70252321 is about 412.6231203954.

Adding to 70252321 its reverse (12325207), we get a palindrome (82577528).

The spelling of 70252321 in words is "seventy million, two hundred fifty-two thousand, three hundred twenty-one".