61317201 has 16 divisors (see below), whose sum is σ = 90076608. Its totient is φ = 36792000.

The previous prime is 61317169. The next prime is 61317203. The reversal of 61317201 is 10271316.

It is not a de Polignac number, because 61317201 - 2⁵ = 61317169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61317203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5866 + ... + 12531.

It is an arithmetic number, because the mean of its divisors is an integer number (5629788).

Almost surely, 2^61317201 is an apocalyptic number.

It is an amenable number.

61317201 is a deficient number, since it is larger than the sum of its proper divisors (28759407).

61317201 is a wasteful number, since it uses less digits than its factorization.

61317201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18512.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 61317201 is about 7830.5300586870. The cubic root of 61317201 is about 394.3308673385.

Adding to 61317201 its reverse (10271316), we get a palindrome (71588517).

The spelling of 61317201 in words is "sixty-one million, three hundred seventeen thousand, two hundred one".