5451890 has 8 divisors (see below), whose sum is σ = 9813420. Its totient is φ = 2180752.

The previous prime is 5451889. The next prime is 5451931. The reversal of 5451890 is 981545.

It can be written as a sum of positive squares in 2 ways, for example, as 5331481 + 120409 = 2309^2 + 347^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272585 + ... + 272604.

Almost surely, 2^5451890 is an apocalyptic number.

5451890 is a deficient number, since it is larger than the sum of its proper divisors (4361530).

5451890 is a wasteful number, since it uses less digits than its factorization.

5451890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545196.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 5451890 is about 2334.9282644227. The cubic root of 5451890 is about 176.0012267476.

The spelling of 5451890 in words is "five million, four hundred fifty-one thousand, eight hundred ninety".