33385957 has 6 divisors (see below), whose sum is σ = 36697094. Its totient is φ = 30350760.

The previous prime is 33385927. The next prime is 33385969. The reversal of 33385957 is 75958333.

It can be written as a sum of positive squares in only one way, i.e., 30980356 + 2405601 = 5566^2 + 1551^2 .

It is not a de Polignac number, because 33385957 - 2⁷ = 33385829 is a prime.

It is a super-2 number, since 2×33385957² = 2229244249611698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33385927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137838 + ... + 138079.

Almost surely, 2^33385957 is an apocalyptic number.

It is an amenable number.

33385957 is a deficient number, since it is larger than the sum of its proper divisors (3311137).

33385957 is a wasteful number, since it uses less digits than its factorization.

33385957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275939 (or 275928 counting only the distinct ones).

The product of its digits is 340200, while the sum is 43.

The square root of 33385957 is about 5778.0582378512. The cubic root of 33385957 is about 321.9990644624. Note that the first 3 decimals are identical.

The spelling of 33385957 in words is "thirty-three million, three hundred eighty-five thousand, nine hundred fifty-seven".