33149953 has 2 divisors, whose sum is σ = 33149954. Its totient is φ = 33149952.

The previous prime is 33149933. The next prime is 33149959. The reversal of 33149953 is 35994133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17205904 + 15944049 = 4148^2 + 3993^2 .

It is a cyclic number.

It is not a de Polignac number, because 33149953 - 2¹³ = 33141761 is a prime.

It is not a weakly prime, because it can be changed into another prime (33149959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16574976 + 16574977.

It is an arithmetic number, because the mean of its divisors is an integer number (16574977).

Almost surely, 2^33149953 is an apocalyptic number.

It is an amenable number.

33149953 is a deficient number, since it is larger than the sum of its proper divisors (1).

33149953 is an equidigital number, since it uses as much as digits as its factorization.

33149953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 37.

The square root of 33149953 is about 5757.5995866333. The cubic root of 33149953 is about 321.2385367376.

The spelling of 33149953 in words is "thirty-three million, one hundred forty-nine thousand, nine hundred fifty-three".