70172249 has 16 divisors (see below), whose sum is σ = 81998208. Its totient is φ = 58810752.

The previous prime is 70172233. The next prime is 70172261. The reversal of 70172249 is 94227107.

It is not a de Polignac number, because 70172249 - 2⁴ = 70172233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70172449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73157 + ... + 74109.

It is an arithmetic number, because the mean of its divisors is an integer number (5124888).

Almost surely, 2^70172249 is an apocalyptic number.

It is an amenable number.

70172249 is a deficient number, since it is larger than the sum of its proper divisors (11825959).

70172249 is a wasteful number, since it uses less digits than its factorization.

70172249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 70172249 is about 8376.8877872394. The cubic root of 70172249 is about 412.4662946442.

The spelling of 70172249 in words is "seventy million, one hundred seventy-two thousand, two hundred forty-nine".