401254541 has 2 divisors, whose sum is σ = 401254542. Its totient is φ = 401254540.

The previous prime is 401254537. The next prime is 401254561. The reversal of 401254541 is 145452104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374577316 + 26677225 = 19354^2 + 5165^2 .

It is a cyclic number.

It is not a de Polignac number, because 401254541 - 2² = 401254537 is a prime.

It is a super-2 number, since 2×401254541² = 322010413346241362, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401254541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401254531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200627270 + 200627271.

It is an arithmetic number, because the mean of its divisors is an integer number (200627271).

Almost surely, 2^401254541 is an apocalyptic number.

It is an amenable number.

401254541 is a deficient number, since it is larger than the sum of its proper divisors (1).

401254541 is an equidigital number, since it uses as much as digits as its factorization.

401254541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 401254541 is about 20031.3389717213. The cubic root of 401254541 is about 737.5757905831.

The spelling of 401254541 in words is "four hundred one million, two hundred fifty-four thousand, five hundred forty-one".