70430251 has 8 divisors (see below), whose sum is σ = 72298800. Its totient is φ = 68568960.

The previous prime is 70430237. The next prime is 70430273. The reversal of 70430251 is 15203407.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70430251 - 2⁵ = 70430219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70430221) 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 in 7 ways as a sum of consecutive naturals, for example, 21820 + ... + 24838.

It is an arithmetic number, because the mean of its divisors is an integer number (9037350).

Almost surely, 2^70430251 is an apocalyptic number.

70430251 is a deficient number, since it is larger than the sum of its proper divisors (1868549).

70430251 is a wasteful number, since it uses less digits than its factorization.

70430251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629.

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

The square root of 70430251 is about 8392.2732915462. The cubic root of 70430251 is about 412.9711807166.

Adding to 70430251 its reverse (15203407), we get a palindrome (85633658).

The spelling of 70430251 in words is "seventy million, four hundred thirty thousand, two hundred fifty-one".