397020541 has 2 divisors, whose sum is σ = 397020542. Its totient is φ = 397020540.

The previous prime is 397020529. The next prime is 397020553. The reversal of 397020541 is 145020793.

It is the 8135-th star number.

It is a balanced prime because it is at equal distance from previous prime (397020529) and next prime (397020553).

It can be written as a sum of positive squares in only one way, i.e., 394181316 + 2839225 = 19854^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 397020541 - 2⁷ = 397020413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397020511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198510270 + 198510271.

It is an arithmetic number, because the mean of its divisors is an integer number (198510271).

Almost surely, 2^397020541 is an apocalyptic number.

It is an amenable number.

397020541 is a deficient number, since it is larger than the sum of its proper divisors (1).

397020541 is an equidigital number, since it uses as much as digits as its factorization.

397020541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 397020541 is about 19925.3743001229. The cubic root of 397020541 is about 734.9723351767.

The spelling of 397020541 in words is "three hundred ninety-seven million, twenty thousand, five hundred forty-one".