5451861 has 8 divisors (see below), whose sum is σ = 7314400. Its totient is φ = 3611952.

The previous prime is 5451847. The next prime is 5451871. The reversal of 5451861 is 1681545.

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

It is not a de Polignac number, because 5451861 - 2⁹ = 5451349 is a prime.

It is a Duffinian number.

5451861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5451871) 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, 5086 + ... + 6063.

It is an arithmetic number, because the mean of its divisors is an integer number (914300).

Almost surely, 2^5451861 is an apocalyptic number.

It is an amenable number.

5451861 is a deficient number, since it is larger than the sum of its proper divisors (1862539).

5451861 is a wasteful number, since it uses less digits than its factorization.

5451861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11315.

The product of its digits is 4800, while the sum is 30.

The square root of 5451861 is about 2334.9220543736. The cubic root of 5451861 is about 176.0009146819. Note that the first 3 decimals are identical.

It can be divided in two parts, 54 and 51861, that added together give a palindrome (51915).

The spelling of 5451861 in words is "five million, four hundred fifty-one thousand, eight hundred sixty-one".