61204133 has 4 divisors (see below), whose sum is σ = 61252620. Its totient is φ = 61155648.

The previous prime is 61204109. The next prime is 61204139. The reversal of 61204133 is 33140216.

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 60871204 + 332929 = 7802^2 + 577^2 .

It is a cyclic number.

It is not a de Polignac number, because 61204133 - 2⁶ = 61204069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61204139) 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, 22298 + ... + 24891.

It is an arithmetic number, because the mean of its divisors is an integer number (15313155).

Almost surely, 2^61204133 is an apocalyptic number.

It is an amenable number.

61204133 is a deficient number, since it is larger than the sum of its proper divisors (48487).

61204133 is a wasteful number, since it uses less digits than its factorization.

61204133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48486.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 61204133 is about 7823.3070373085. The cubic root of 61204133 is about 394.0883381334.

Adding to 61204133 its reverse (33140216), we get a palindrome (94344349).

The spelling of 61204133 in words is "sixty-one million, two hundred four thousand, one hundred thirty-three".