61433261 has 4 divisors (see below), whose sum is σ = 61660224. Its totient is φ = 61206300.

The previous prime is 61433249. The next prime is 61433263. The reversal of 61433261 is 16233416.

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 a de Polignac number, because none of the positive numbers 2^k-61433261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61433261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61433263) 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, 113075 + ... + 113616.

It is an arithmetic number, because the mean of its divisors is an integer number (15415056).

Almost surely, 2^61433261 is an apocalyptic number.

It is an amenable number.

61433261 is a deficient number, since it is larger than the sum of its proper divisors (226963).

61433261 is a wasteful number, since it uses less digits than its factorization.

61433261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226962.

The product of its digits is 2592, while the sum is 26.

The square root of 61433261 is about 7837.9372924259. The cubic root of 61433261 is about 394.5795044529.

Adding to 61433261 its reverse (16233416), we get a palindrome (77666677).

The spelling of 61433261 in words is "sixty-one million, four hundred thirty-three thousand, two hundred sixty-one".