61435261 has 8 divisors (see below), whose sum is σ = 64399104. Its totient is φ = 58541280.

The previous prime is 61435259. The next prime is 61435271. The reversal of 61435261 is 16253416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61435261 - 2¹ = 61435259 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 (61435271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15661 + ... + 19186.

It is an arithmetic number, because the mean of its divisors is an integer number (8049888).

Almost surely, 2^61435261 is an apocalyptic number.

It is an amenable number.

61435261 is a deficient number, since it is larger than the sum of its proper divisors (2963843).

61435261 is a wasteful number, since it uses less digits than its factorization.

61435261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34931.

The product of its digits is 4320, while the sum is 28.

The square root of 61435261 is about 7838.0648759754. The cubic root of 61435261 is about 394.5837863377.

Adding to 61435261 its reverse (16253416), we get a palindrome (77688677).

The spelling of 61435261 in words is "sixty-one million, four hundred thirty-five thousand, two hundred sixty-one".