61357229 has 2 divisors, whose sum is σ = 61357230. Its totient is φ = 61357228.

The previous prime is 61357207. The next prime is 61357237. The reversal of 61357229 is 92275316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52345225 + 9012004 = 7235^2 + 3002^2 .

It is a cyclic number.

It is not a de Polignac number, because 61357229 - 2²⁴ = 44580013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61357249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30678614 + 30678615.

It is an arithmetic number, because the mean of its divisors is an integer number (30678615).

Almost surely, 2^61357229 is an apocalyptic number.

It is an amenable number.

61357229 is a deficient number, since it is larger than the sum of its proper divisors (1).

61357229 is an equidigital number, since it uses as much as digits as its factorization.

61357229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 61357229 is about 7833.0855350877. The cubic root of 61357229 is about 394.4166553516.

The spelling of 61357229 in words is "sixty-one million, three hundred fifty-seven thousand, two hundred twenty-nine".