5451681401 has 8 divisors (see below), whose sum is σ = 5478978120. Its totient is φ = 5424415488.

The previous prime is 5451681379. The next prime is 5451681407. The reversal of 5451681401 is 1041861545.

It can be written as a sum of positive squares in 4 ways, for example, as 659719225 + 4791962176 = 25685^2 + 69224^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5451681401 - 2⁶ = 5451681337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5451681407) 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, 400235 + ... + 413631.

It is an arithmetic number, because the mean of its divisors is an integer number (684872265).

Almost surely, 2^5451681401 is an apocalyptic number.

It is an amenable number.

5451681401 is a deficient number, since it is larger than the sum of its proper divisors (27296719).

5451681401 is a wasteful number, since it uses less digits than its factorization.

5451681401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15403.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 5451681401 is about 73835.5023074943. The cubic root of 5451681401 is about 1759.9898201245.

The spelling of 5451681401 in words is "five billion, four hundred fifty-one million, six hundred eighty-one thousand, four hundred one".