61854029 has 2 divisors, whose sum is σ = 61854030. Its totient is φ = 61854028.

The previous prime is 61854019. The next prime is 61854059. The reversal of 61854029 is 92045816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38068900 + 23785129 = 6170^2 + 4877^2 .

It is a cyclic number.

It is not a de Polignac number, because 61854029 - 2²⁴ = 45076813 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_3665465 and since 61854029 and 3665465 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61854029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61854019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30927014 + 30927015.

It is an arithmetic number, because the mean of its divisors is an integer number (30927015).

Almost surely, 2^61854029 is an apocalyptic number.

It is an amenable number.

61854029 is a deficient number, since it is larger than the sum of its proper divisors (1).

61854029 is an equidigital number, since it uses as much as digits as its factorization.

61854029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 61854029 is about 7864.7332440459. The cubic root of 61854029 is about 395.4783053805.

The spelling of 61854029 in words is "sixty-one million, eight hundred fifty-four thousand, twenty-nine".