61277201 has 2 divisors, whose sum is σ = 61277202. Its totient is φ = 61277200.

The previous prime is 61277179. The next prime is 61277207. The reversal of 61277201 is 10277216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58920976 + 2356225 = 7676^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 61277201 - 2⁶ = 61277137 is a prime.

It is not a weakly prime, because it can be changed into another prime (61277207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30638600 + 30638601.

It is an arithmetic number, because the mean of its divisors is an integer number (30638601).

Almost surely, 2^61277201 is an apocalyptic number.

It is an amenable number.

61277201 is a deficient number, since it is larger than the sum of its proper divisors (1).

61277201 is an equidigital number, since it uses as much as digits as its factorization.

61277201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 61277201 is about 7827.9755364973. The cubic root of 61277201 is about 394.2451020309.

The spelling of 61277201 in words is "sixty-one million, two hundred seventy-seven thousand, two hundred one".