401427751 has 2 divisors, whose sum is σ = 401427752. Its totient is φ = 401427750.

The previous prime is 401427743. The next prime is 401427781. The reversal of 401427751 is 157724104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401427751 - 2³ = 401427743 is a prime.

It is a super-2 number, since 2×401427751² = 322288478545836002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401427721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200713875 + 200713876.

It is an arithmetic number, because the mean of its divisors is an integer number (200713876).

Almost surely, 2^401427751 is an apocalyptic number.

401427751 is a deficient number, since it is larger than the sum of its proper divisors (1).

401427751 is an equidigital number, since it uses as much as digits as its factorization.

401427751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 401427751 is about 20035.6619805785. The cubic root of 401427751 is about 737.6819053733.

The spelling of 401427751 in words is "four hundred one million, four hundred twenty-seven thousand, seven hundred fifty-one".