61451859 has 16 divisors (see below), whose sum is σ = 95820032. Its totient is φ = 34298208.

The previous prime is 61451839. The next prime is 61451861. The reversal of 61451859 is 95815416.

It is not a de Polignac number, because 61451859 - 2⁹ = 61451347 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (61451839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33124 + ... + 34929.

It is an arithmetic number, because the mean of its divisors is an integer number (5988752).

Almost surely, 2^61451859 is an apocalyptic number.

61451859 is a deficient number, since it is larger than the sum of its proper divisors (34368173).

61451859 is a wasteful number, since it uses less digits than its factorization.

61451859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68106.

The product of its digits is 43200, while the sum is 39.

The square root of 61451859 is about 7839.1236117311. The cubic root of 61451859 is about 394.6193181146.

The spelling of 61451859 in words is "sixty-one million, four hundred fifty-one thousand, eight hundred fifty-nine".