61147901 has 2 divisors, whose sum is σ = 61147902. Its totient is φ = 61147900.

The previous prime is 61147897. The next prime is 61147913. The reversal of 61147901 is 10974116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44542276 + 16605625 = 6674^2 + 4075^2 .

It is a cyclic number.

It is not a de Polignac number, because 61147901 - 2² = 61147897 is a prime.

It is equal to p_3626246 and since 61147901 and 3626246 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61147981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30573950 + 30573951.

It is an arithmetic number, because the mean of its divisors is an integer number (30573951).

Almost surely, 2^61147901 is an apocalyptic number.

It is an amenable number.

61147901 is a deficient number, since it is larger than the sum of its proper divisors (1).

61147901 is an equidigital number, since it uses as much as digits as its factorization.

61147901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 61147901 is about 7819.7123348625. The cubic root of 61147901 is about 393.9676100904.

The spelling of 61147901 in words is "sixty-one million, one hundred forty-seven thousand, nine hundred one".