61603301 has 4 divisors (see below), whose sum is σ = 64845600. Its totient is φ = 58361004.

The previous prime is 61603277. The next prime is 61603303. The reversal of 61603301 is 10330616.

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-61603301 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 (61603303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1621121 + ... + 1621158.

It is an arithmetic number, because the mean of its divisors is an integer number (16211400).

Almost surely, 2^61603301 is an apocalyptic number.

It is an amenable number.

61603301 is a deficient number, since it is larger than the sum of its proper divisors (3242299).

61603301 is a wasteful number, since it uses less digits than its factorization.

61603301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242298.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 61603301 is about 7848.7770384946. Note that the first 3 decimals coincide. The cubic root of 61603301 is about 394.9432188851.

Adding to 61603301 its reverse (10330616), we get a palindrome (71933917).

The spelling of 61603301 in words is "sixty-one million, six hundred three thousand, three hundred one".