61023161 has 2 divisors, whose sum is σ = 61023162. Its totient is φ = 61023160.

The previous prime is 61023139. The next prime is 61023181. The reversal of 61023161 is 16132016.

It is an a-pointer prime, because the next prime (61023181) can be obtained adding 61023161 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35581225 + 25441936 = 5965^2 + 5044^2 .

It is a cyclic number.

It is not a de Polignac number, because 61023161 - 2²² = 56828857 is a prime.

It is not a weakly prime, because it can be changed into another prime (61023121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30511580 + 30511581.

It is an arithmetic number, because the mean of its divisors is an integer number (30511581).

Almost surely, 2^61023161 is an apocalyptic number.

It is an amenable number.

61023161 is a deficient number, since it is larger than the sum of its proper divisors (1).

61023161 is an equidigital number, since it uses as much as digits as its factorization.

61023161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 61023161 is about 7811.7322662774. The cubic root of 61023161 is about 393.6995334329.

Adding to 61023161 its reverse (16132016), we get a palindrome (77155177).

The spelling of 61023161 in words is "sixty-one million, twenty-three thousand, one hundred sixty-one".