61251959 has 2 divisors, whose sum is σ = 61251960. Its totient is φ = 61251958.

The previous prime is 61251947. The next prime is 61251979. The reversal of 61251959 is 95915216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61251959 - 2¹⁶ = 61186423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61251919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30625979 + 30625980.

It is an arithmetic number, because the mean of its divisors is an integer number (30625980).

Almost surely, 2^61251959 is an apocalyptic number.

61251959 is a deficient number, since it is larger than the sum of its proper divisors (1).

61251959 is an equidigital number, since it uses as much as digits as its factorization.

61251959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 38.

The square root of 61251959 is about 7826.3630761676. The cubic root of 61251959 is about 394.1909606240.

The spelling of 61251959 in words is "sixty-one million, two hundred fifty-one thousand, nine hundred fifty-nine".