70254109 has 4 divisors (see below), whose sum is σ = 70719520. Its totient is φ = 69788700.

The previous prime is 70254059. The next prime is 70254113. The reversal of 70254109 is 90145207.

It is a happy number.

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: 90145207 = 541 ⋅166627.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70254109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70254139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232479 + ... + 232780.

It is an arithmetic number, because the mean of its divisors is an integer number (17679880).

Almost surely, 2^70254109 is an apocalyptic number.

It is an amenable number.

70254109 is a deficient number, since it is larger than the sum of its proper divisors (465411).

70254109 is a wasteful number, since it uses less digits than its factorization.

70254109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465410.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 70254109 is about 8381.7724259252. The cubic root of 70254109 is about 412.6266209387.

It can be divided in two parts, 70 and 254109, that multiplied together give a triangular number (17787630 = T₅₉₆₄).

The spelling of 70254109 in words is "seventy million, two hundred fifty-four thousand, one hundred nine".