5451681407 has 2 divisors, whose sum is σ = 5451681408. Its totient is φ = 5451681406.

The previous prime is 5451681379. The next prime is 5451681409. The reversal of 5451681407 is 7041861545.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5451681407 is a prime.

Together with 5451681409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5451681409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2725840703 + 2725840704.

It is an arithmetic number, because the mean of its divisors is an integer number (2725840704).

Almost surely, 2^5451681407 is an apocalyptic number.

5451681407 is a deficient number, since it is larger than the sum of its proper divisors (1).

5451681407 is an equidigital number, since it uses as much as digits as its factorization.

5451681407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 5451681407 is about 73835.5023481252. The cubic root of 5451681407 is about 1759.9898207702.

The spelling of 5451681407 in words is "five billion, four hundred fifty-one million, six hundred eighty-one thousand, four hundred seven".