401602541 has 2 divisors, whose sum is σ = 401602542. Its totient is φ = 401602540.

The previous prime is 401602511. The next prime is 401602547. The reversal of 401602541 is 145206104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310781641 + 90820900 = 17629^2 + 9530^2 .

It is a cyclic number.

It is not a de Polignac number, because 401602541 - 2¹⁰ = 401601517 is a prime.

It is a super-2 number, since 2×401602541² = 322569201875313362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401602547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200801270 + 200801271.

It is an arithmetic number, because the mean of its divisors is an integer number (200801271).

Almost surely, 2^401602541 is an apocalyptic number.

It is an amenable number.

401602541 is a deficient number, since it is larger than the sum of its proper divisors (1).

401602541 is an equidigital number, since it uses as much as digits as its factorization.

401602541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 401602541 is about 20040.0234780302. The cubic root of 401602541 is about 737.7889571903.

Adding to 401602541 its reverse (145206104), we get a palindrome (546808645).

The spelling of 401602541 in words is "four hundred one million, six hundred two thousand, five hundred forty-one".