401320057 has 2 divisors, whose sum is σ = 401320058. Its totient is φ = 401320056.

The previous prime is 401320043. The next prime is 401320063. The reversal of 401320057 is 750023104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 379314576 + 22005481 = 19476^2 + 4691^2 .

It is a cyclic number.

It is not a de Polignac number, because 401320057 - 2¹¹ = 401318009 is a prime.

It is a super-4 number, since 4×401320057⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (401320657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200660028 + 200660029.

It is an arithmetic number, because the mean of its divisors is an integer number (200660029).

Almost surely, 2^401320057 is an apocalyptic number.

It is an amenable number.

401320057 is a deficient number, since it is larger than the sum of its proper divisors (1).

401320057 is an equidigital number, since it uses as much as digits as its factorization.

401320057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 401320057 is about 20032.9742424833. The cubic root of 401320057 is about 737.6159316746.

The spelling of 401320057 in words is "four hundred one million, three hundred twenty thousand, fifty-seven".