61211827 has 2 divisors, whose sum is σ = 61211828. Its totient is φ = 61211826.

The previous prime is 61211791. The next prime is 61211861. The reversal of 61211827 is 72811216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61211827 - 2⁷ = 61211699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61211795 and 61211804.

It is not a weakly prime, because it can be changed into another prime (61211867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30605913 + 30605914.

It is an arithmetic number, because the mean of its divisors is an integer number (30605914).

Almost surely, 2^61211827 is an apocalyptic number.

61211827 is a deficient number, since it is larger than the sum of its proper divisors (1).

61211827 is an equidigital number, since it uses as much as digits as its factorization.

61211827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 28.

The square root of 61211827 is about 7823.7987576369. The cubic root of 61211827 is about 394.1048511175.

The spelling of 61211827 in words is "sixty-one million, two hundred eleven thousand, eight hundred twenty-seven".