70145452 has 12 divisors (see below), whose sum is σ = 132197296. Its totient is φ = 32374800.

The previous prime is 70145441. The next prime is 70145477. The reversal of 70145452 is 25454107.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 70145452.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 674424 + ... + 674527.

Almost surely, 2^70145452 is an apocalyptic number.

It is an amenable number.

70145452 is a deficient number, since it is larger than the sum of its proper divisors (62051844).

70145452 is a wasteful number, since it uses less digits than its factorization.

70145452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348968 (or 1348966 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 70145452 is about 8375.2881741466. The cubic root of 70145452 is about 412.4137844915.

Adding to 70145452 its reverse (25454107), we get a palindrome (95599559).

The spelling of 70145452 in words is "seventy million, one hundred forty-five thousand, four hundred fifty-two".