61147297 has 2 divisors, whose sum is σ = 61147298. Its totient is φ = 61147296.

The previous prime is 61147291. The next prime is 61147309. The reversal of 61147297 is 79274116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42562576 + 18584721 = 6524^2 + 4311^2 .

It is a cyclic number.

It is not a de Polignac number, because 61147297 - 2²³ = 52758689 is a prime.

It is not a weakly prime, because it can be changed into another prime (61147291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30573648 + 30573649.

It is an arithmetic number, because the mean of its divisors is an integer number (30573649).

Almost surely, 2^61147297 is an apocalyptic number.

It is an amenable number.

61147297 is a deficient number, since it is larger than the sum of its proper divisors (1).

61147297 is an equidigital number, since it uses as much as digits as its factorization.

61147297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 61147297 is about 7819.6737144206. The cubic root of 61147297 is about 393.9663129229.

The spelling of 61147297 in words is "sixty-one million, one hundred forty-seven thousand, two hundred ninety-seven".