61137259 has 2 divisors, whose sum is σ = 61137260. Its totient is φ = 61137258.

The previous prime is 61137227. The next prime is 61137277. The reversal of 61137259 is 95273116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61137259 - 2⁵ = 61137227 is a prime.

It is not a weakly prime, because it can be changed into another prime (61107259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30568629 + 30568630.

It is an arithmetic number, because the mean of its divisors is an integer number (30568630).

Almost surely, 2^61137259 is an apocalyptic number.

61137259 is a deficient number, since it is larger than the sum of its proper divisors (1).

61137259 is an equidigital number, since it uses as much as digits as its factorization.

61137259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 34.

The square root of 61137259 is about 7819.0318454397. The cubic root of 61137259 is about 393.9447537782.

The spelling of 61137259 in words is "sixty-one million, one hundred thirty-seven thousand, two hundred fifty-nine".