61277233 has 2 divisors, whose sum is σ = 61277234. Its totient is φ = 61277232.

The previous prime is 61277213. The next prime is 61277239. The reversal of 61277233 is 33277216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36397089 + 24880144 = 6033^2 + 4988^2 .

It is a cyclic number.

It is not a de Polignac number, because 61277233 - 2⁵ = 61277201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61277195 and 61277204.

It is not a weakly prime, because it can be changed into another prime (61277239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30638616 + 30638617.

It is an arithmetic number, because the mean of its divisors is an integer number (30638617).

Almost surely, 2^61277233 is an apocalyptic number.

It is an amenable number.

61277233 is a deficient number, since it is larger than the sum of its proper divisors (1).

61277233 is an equidigital number, since it uses as much as digits as its factorization.

61277233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 31.

The square root of 61277233 is about 7827.9775804482. The cubic root of 61277233 is about 394.2451706581.

The spelling of 61277233 in words is "sixty-one million, two hundred seventy-seven thousand, two hundred thirty-three".