61854881 has 8 divisors (see below), whose sum is σ = 68109984. Its totient is φ = 55705120.

The previous prime is 61854853. The next prime is 61854893. The reversal of 61854881 is 18845816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61854881 is a prime.

It is a super-2 number, since 2×61854881² = 7652052607048322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61854811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25100 + ... + 27453.

It is an arithmetic number, because the mean of its divisors is an integer number (8513748).

Almost surely, 2^61854881 is an apocalyptic number.

It is an amenable number.

61854881 is a deficient number, since it is larger than the sum of its proper divisors (6255103).

61854881 is a wasteful number, since it uses less digits than its factorization.

61854881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52671.

The product of its digits is 61440, while the sum is 41.

The square root of 61854881 is about 7864.7874097143. The cubic root of 61854881 is about 395.4801211931.

The spelling of 61854881 in words is "sixty-one million, eight hundred fifty-four thousand, eight hundred eighty-one".