61957229 has 2 divisors, whose sum is σ = 61957230. Its totient is φ = 61957228.

The previous prime is 61957219. The next prime is 61957237. The reversal of 61957229 is 92275916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32775625 + 29181604 = 5725^2 + 5402^2 .

It is a cyclic number.

It is not a de Polignac number, because 61957229 - 2¹⁶ = 61891693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61957219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30978614 + 30978615.

It is an arithmetic number, because the mean of its divisors is an integer number (30978615).

Almost surely, 2^61957229 is an apocalyptic number.

It is an amenable number.

61957229 is a deficient number, since it is larger than the sum of its proper divisors (1).

61957229 is an equidigital number, since it uses as much as digits as its factorization.

61957229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 41.

The square root of 61957229 is about 7871.2914442295. The cubic root of 61957229 is about 395.6981276756.

The spelling of 61957229 in words is "sixty-one million, nine hundred fifty-seven thousand, two hundred twenty-nine".