61315201 has 4 divisors (see below), whose sum is σ = 61330900. Its totient is φ = 61299504.

The previous prime is 61315183. The next prime is 61315207. The reversal of 61315201 is 10251316.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 41280625 + 20034576 = 6425^2 + 4476^2 .

It is a cyclic number.

It is not a de Polignac number, because 61315201 - 2¹⁷ = 61184129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61315207) 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, 3115 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (15332725).

Almost surely, 2^61315201 is an apocalyptic number.

It is an amenable number.

61315201 is a deficient number, since it is larger than the sum of its proper divisors (15699).

61315201 is an equidigital number, since it uses as much as digits as its factorization.

61315201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15698.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 61315201 is about 7830.4023523699. The cubic root of 61315201 is about 394.3265799591.

Adding to 61315201 its reverse (10251316), we get a palindrome (71566517).

It can be divided in two parts, 61315 and 201, that added together give a palindrome (61516).

The spelling of 61315201 in words is "sixty-one million, three hundred fifteen thousand, two hundred one".