61435321 has 8 divisors (see below), whose sum is σ = 63058824. Its totient is φ = 59829120.

The previous prime is 61435271. The next prime is 61435333. The reversal of 61435321 is 12353416.

It can be written as a sum of positive squares in 4 ways, for example, as 27667600 + 33767721 = 5260^2 + 5811^2 .

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 61435321 - 2¹³ = 61427129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61435351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3031 + ... + 11491.

It is an arithmetic number, because the mean of its divisors is an integer number (7882353).

Almost surely, 2^61435321 is an apocalyptic number.

It is an amenable number.

61435321 is a deficient number, since it is larger than the sum of its proper divisors (1623503).

61435321 is a wasteful number, since it uses less digits than its factorization.

61435321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8651.

The product of its digits is 2160, while the sum is 25.

The square root of 61435321 is about 7838.0687034498. The cubic root of 61435321 is about 394.5839147928.

Adding to 61435321 its reverse (12353416), we get a palindrome (73788737).

The spelling of 61435321 in words is "sixty-one million, four hundred thirty-five thousand, three hundred twenty-one".