406525243 has 4 divisors (see below), whose sum is σ = 406786240. Its totient is φ = 406264248.

The previous prime is 406525237. The next prime is 406525313. The reversal of 406525243 is 342525604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406525243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406526243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128148 + ... + 131281.

It is an arithmetic number, because the mean of its divisors is an integer number (101696560).

Almost surely, 2^406525243 is an apocalyptic number.

406525243 is a deficient number, since it is larger than the sum of its proper divisors (260997).

406525243 is a wasteful number, since it uses less digits than its factorization.

406525243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260996.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 406525243 is about 20162.4711531102. The cubic root of 406525243 is about 740.7912421732.

The spelling of 406525243 in words is "four hundred six million, five hundred twenty-five thousand, two hundred forty-three".