61355201 has 4 divisors (see below), whose sum is σ = 61427652. Its totient is φ = 61282752.

The previous prime is 61355179. The next prime is 61355207. The reversal of 61355201 is 10255316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43546801 + 17808400 = 6599^2 + 4220^2 .

It is a cyclic number.

It is not a de Polignac number, because 61355201 - 2¹⁸ = 61093057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61355207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34940 + ... + 36653.

It is an arithmetic number, because the mean of its divisors is an integer number (15356913).

Almost surely, 2^61355201 is an apocalyptic number.

It is an amenable number.

61355201 is a deficient number, since it is larger than the sum of its proper divisors (72451).

61355201 is an equidigital number, since it uses as much as digits as its factorization.

61355201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72450.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 61355201 is about 7832.9560831145. The cubic root of 61355201 is about 394.4123098392.

The spelling of 61355201 in words is "sixty-one million, three hundred fifty-five thousand, two hundred one".