523452321 has 32 divisors (see below), whose sum is σ = 938407680. Its totient is φ = 281518848.

The previous prime is 523452313. The next prime is 523452379. The reversal of 523452321 is 123254325.

It is a happy number.

It is not a de Polignac number, because 523452321 - 2³ = 523452313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (523452421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78246 + ... + 84671.

It is an arithmetic number, because the mean of its divisors is an integer number (29325240).

Almost surely, 2^523452321 is an apocalyptic number.

523452321 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

523452321 is a deficient number, since it is larger than the sum of its proper divisors (414955359).

523452321 is a wasteful number, since it uses less digits than its factorization.

523452321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162950 (or 162944 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 523452321 is about 22879.0804229541. The cubic root of 523452321 is about 805.9208222460.

The spelling of 523452321 in words is "five hundred twenty-three million, four hundred fifty-two thousand, three hundred twenty-one".