33400061 has 4 divisors (see below), whose sum is σ = 33454812. Its totient is φ = 33345312.

The previous prime is 33400057. The next prime is 33400063. The reversal of 33400061 is 16000433.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 337561 + 33062500 = 581^2 + 5750^2 .

It is a cyclic number.

It is not a de Polignac number, because 33400061 - 2² = 33400057 is a prime.

It is a super-2 number, since 2×33400061² = 2231128149607442, 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 (33400063) 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, 26450 + ... + 27683.

It is an arithmetic number, because the mean of its divisors is an integer number (8363703).

Almost surely, 2^33400061 is an apocalyptic number.

It is an amenable number.

33400061 is a deficient number, since it is larger than the sum of its proper divisors (54751).

33400061 is an equidigital number, since it uses as much as digits as its factorization.

33400061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54750.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 33400061 is about 5779.2785881977. The cubic root of 33400061 is about 322.0444012431.

Adding to 33400061 its reverse (16000433), we get a palindrome (49400494).

The spelling of 33400061 in words is "thirty-three million, four hundred thousand, sixty-one".