333349561 has 4 divisors (see below), whose sum is σ = 334073124. Its totient is φ = 332626000.

The previous prime is 333349537. The next prime is 333349573. The reversal of 333349561 is 165943333.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165943333 = 131 ⋅1266743.

It can be written as a sum of positive squares in 2 ways, for example, as 157628025 + 175721536 = 12555^2 + 13256^2 .

It is a cyclic number.

It is not a de Polignac number, because 333349561 - 2⁵ = 333349529 is a prime.

It is a super-2 number, since 2×333349561² = 222243859637785442, which contains 22 as substring.

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 333349561.

It is not an unprimeable number, because it can be changed into a prime (333349501) 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, 361090 + ... + 362011.

It is an arithmetic number, because the mean of its divisors is an integer number (83518281).

Almost surely, 2^333349561 is an apocalyptic number.

It is an amenable number.

333349561 is a deficient number, since it is larger than the sum of its proper divisors (723563).

333349561 is an equidigital number, since it uses as much as digits as its factorization.

333349561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723562.

The product of its digits is 87480, while the sum is 37.

The square root of 333349561 is about 18257.8629910513. The cubic root of 333349561 is about 693.3725258037.

The spelling of 333349561 in words is "three hundred thirty-three million, three hundred forty-nine thousand, five hundred sixty-one".