61430433 has 4 divisors (see below), whose sum is σ = 81907248. Its totient is φ = 40953620.

The previous prime is 61430429. The next prime is 61430441. The reversal of 61430433 is 33403416.

61430433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61430433 - 2² = 61430429 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61430443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10238403 + ... + 10238408.

It is an arithmetic number, because the mean of its divisors is an integer number (20476812).

Almost surely, 2^61430433 is an apocalyptic number.

It is an amenable number.

61430433 is a deficient number, since it is larger than the sum of its proper divisors (20476815).

61430433 is a wasteful number, since it uses less digits than its factorization.

61430433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20476814.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 61430433 is about 7837.7568857422. The cubic root of 61430433 is about 394.5734497091.

Adding to 61430433 its reverse (33403416), we get a palindrome (94833849).

The spelling of 61430433 in words is "sixty-one million, four hundred thirty thousand, four hundred thirty-three".