401525791 has 2 divisors, whose sum is σ = 401525792. Its totient is φ = 401525790.

The previous prime is 401525779. The next prime is 401525797. The reversal of 401525791 is 197525104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401525791 - 2⁵ = 401525759 is a prime.

It is a super-2 number, since 2×401525791² = 322445921676351362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401525797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200762895 + 200762896.

It is an arithmetic number, because the mean of its divisors is an integer number (200762896).

Almost surely, 2^401525791 is an apocalyptic number.

401525791 is a deficient number, since it is larger than the sum of its proper divisors (1).

401525791 is an equidigital number, since it uses as much as digits as its factorization.

401525791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 401525791 is about 20038.1084686155. The cubic root of 401525791 is about 737.7419547403.

The spelling of 401525791 in words is "four hundred one million, five hundred twenty-five thousand, seven hundred ninety-one".