5451456249 has 20 divisors (see below), whose sum is σ = 8622566964. Its totient is φ = 3420520704.

The previous prime is 5451456239. The next prime is 5451456281. The reversal of 5451456249 is 9426541545.

5451456249 is a `hidden beast` number, since 5 + 4 + 5 + 14 + 5 + 624 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3679635600 + 1771820649 = 60660^2 + 42093^2 .

It is not a de Polignac number, because 5451456249 - 2⁷ = 5451456121 is a prime.

It is a super-2 number, since 2×5451456249² = 59436750469522300002, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5451456239) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1978092 + ... + 1980845.

Almost surely, 2^5451456249 is an apocalyptic number.

It is an amenable number.

5451456249 is a deficient number, since it is larger than the sum of its proper divisors (3171110715).

5451456249 is a wasteful number, since it uses less digits than its factorization.

5451456249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958966 (or 3958957 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The square root of 5451456249 is about 73833.9776051650. The cubic root of 5451456249 is about 1759.9655908605.

The spelling of 5451456249 in words is "five billion, four hundred fifty-one million, four hundred fifty-six thousand, two hundred forty-nine".