61516201 has 2 divisors, whose sum is σ = 61516202. Its totient is φ = 61516200.

The previous prime is 61516193. The next prime is 61516223. The reversal of 61516201 is 10261516.

It is an a-pointer prime, because the next prime (61516223) can be obtained adding 61516201 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54096025 + 7420176 = 7355^2 + 2724^2 .

It is a cyclic number.

It is not a de Polignac number, because 61516201 - 2³ = 61516193 is a prime.

It is not a weakly prime, because it can be changed into another prime (61516501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30758100 + 30758101.

It is an arithmetic number, because the mean of its divisors is an integer number (30758101).

Almost surely, 2^61516201 is an apocalyptic number.

It is an amenable number.

61516201 is a deficient number, since it is larger than the sum of its proper divisors (1).

61516201 is an equidigital number, since it uses as much as digits as its factorization.

61516201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 61516201 is about 7843.2264406939. The cubic root of 61516201 is about 394.7569962915.

Adding to 61516201 its reverse (10261516), we get a palindrome (71777717).

The spelling of 61516201 in words is "sixty-one million, five hundred sixteen thousand, two hundred one".