33013957 has 2 divisors, whose sum is σ = 33013958. Its totient is φ = 33013956.

The previous prime is 33013951. The next prime is 33013961. The reversal of 33013957 is 75931033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21818241 + 11195716 = 4671^2 + 3346^2 .

It is a cyclic number.

It is not a de Polignac number, because 33013957 - 2⁷ = 33013829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33013951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16506978 + 16506979.

It is an arithmetic number, because the mean of its divisors is an integer number (16506979).

Almost surely, 2^33013957 is an apocalyptic number.

It is an amenable number.

33013957 is a deficient number, since it is larger than the sum of its proper divisors (1).

33013957 is an equidigital number, since it uses as much as digits as its factorization.

33013957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 31.

The square root of 33013957 is about 5745.7773190405. Note that the first 3 decimals coincide. The cubic root of 33013957 is about 320.7986463802.

The spelling of 33013957 in words is "thirty-three million, thirteen thousand, nine hundred fifty-seven".