61255847 has 2 divisors, whose sum is σ = 61255848. Its totient is φ = 61255846.

The previous prime is 61255841. The next prime is 61255849. The reversal of 61255847 is 74855216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61255847 is a prime.

Together with 61255849, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 61255847 parts by 11068 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 61255847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61255841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30627923 + 30627924.

It is an arithmetic number, because the mean of its divisors is an integer number (30627924).

Almost surely, 2^61255847 is an apocalyptic number.

61255847 is a deficient number, since it is larger than the sum of its proper divisors (1).

61255847 is an equidigital number, since it uses as much as digits as its factorization.

61255847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 38.

The square root of 61255847 is about 7826.6114634623. The cubic root of 61255847 is about 394.1993009397.

The spelling of 61255847 in words is "sixty-one million, two hundred fifty-five thousand, eight hundred forty-seven".