70452161 has 4 divisors (see below), whose sum is σ = 75871572. Its totient is φ = 65032752.

The previous prime is 70452157. The next prime is 70452203. The reversal of 70452161 is 16125407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16125407 = 3257 ⋅4951.

It can be written as a sum of positive squares in 2 ways, for example, as 39438400 + 31013761 = 6280^2 + 5569^2 .

It is a cyclic number.

It is not a de Polignac number, because 70452161 - 2² = 70452157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70452161.

It is not an unprimeable number, because it can be changed into a prime (70452101) 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, 2709686 + ... + 2709711.

It is an arithmetic number, because the mean of its divisors is an integer number (18967893).

Almost surely, 2^70452161 is an apocalyptic number.

It is an amenable number.

70452161 is a deficient number, since it is larger than the sum of its proper divisors (5419411).

70452161 is a wasteful number, since it uses less digits than its factorization.

70452161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419410.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 70452161 is about 8393.5785574450. The cubic root of 70452161 is about 413.0139997248.

Adding to 70452161 its reverse (16125407), we get a palindrome (86577568).

The spelling of 70452161 in words is "seventy million, four hundred fifty-two thousand, one hundred sixty-one".