352542409 has 4 divisors (see below), whose sum is σ = 357804304. Its totient is φ = 347280516.
The previous prime is 352542403. The next prime is 352542427. The reversal of 352542409 is 904245253.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 352542409 - 211 = 352540361 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (352542403) 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, 2630847 + ... + 2630980.
It is an arithmetic number, because the mean of its divisors is an integer number (89451076).
Almost surely, 2352542409 is an apocalyptic number.
It is an amenable number.
352542409 is a deficient number, since it is larger than the sum of its proper divisors (5261895).
352542409 is an equidigital number, since it uses as much as digits as its factorization.
352542409 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5261894.
The product of its (nonzero) digits is 43200, while the sum is 34.
The square root of 352542409 is about 18776.1127233514. The cubic root of 352542409 is about 706.4321500153.
The spelling of 352542409 in words is "three hundred fifty-two million, five hundred forty-two thousand, four hundred nine".
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