61853161 has 2 divisors, whose sum is σ = 61853162. Its totient is φ = 61853160.

The previous prime is 61853147. The next prime is 61853203. The reversal of 61853161 is 16135816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61544025 + 309136 = 7845^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 61853161 - 2¹⁵ = 61820393 is a prime.

It is not a weakly prime, because it can be changed into another prime (61854161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30926580 + 30926581.

It is an arithmetic number, because the mean of its divisors is an integer number (30926581).

Almost surely, 2^61853161 is an apocalyptic number.

It is an amenable number.

61853161 is a deficient number, since it is larger than the sum of its proper divisors (1).

61853161 is an equidigital number, since it uses as much as digits as its factorization.

61853161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 61853161 is about 7864.6780607982. The cubic root of 61853161 is about 395.4764554510.

Adding to 61853161 its reverse (16135816), we get a palindrome (77988977).

The spelling of 61853161 in words is "sixty-one million, eight hundred fifty-three thousand, one hundred sixty-one".