33397145 has 8 divisors (see below), whose sum is σ = 40166280. Its totient is φ = 26657920.

The previous prime is 33397141. The next prime is 33397151. The reversal of 33397145 is 54179333.

It can be written as a sum of positive squares in 4 ways, for example, as 34969 + 33362176 = 187^2 + 5776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33397145 - 2² = 33397141 is a prime.

It is a super-2 number, since 2×33397145² = 2230738588302050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33397141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4940 + ... + 9549.

It is an arithmetic number, because the mean of its divisors is an integer number (5020785).

Almost surely, 2^33397145 is an apocalyptic number.

It is an amenable number.

33397145 is a deficient number, since it is larger than the sum of its proper divisors (6769135).

33397145 is a wasteful number, since it uses less digits than its factorization.

33397145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14955.

The product of its digits is 34020, while the sum is 35.

The square root of 33397145 is about 5779.0263020685. The cubic root of 33397145 is about 322.0350289169.

The spelling of 33397145 in words is "thirty-three million, three hundred ninety-seven thousand, one hundred forty-five".