523220453 has 4 divisors (see below), whose sum is σ = 597966240. Its totient is φ = 448474668.

The previous prime is 523220447. The next prime is 523220459. The reversal of 523220453 is 354022325.

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 an interprime number because it is at equal distance from previous prime (523220447) and next prime (523220459).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523220453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523220459) 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, 37372883 + ... + 37372896.

It is an arithmetic number, because the mean of its divisors is an integer number (149491560).

Almost surely, 2^523220453 is an apocalyptic number.

It is an amenable number.

523220453 is a deficient number, since it is larger than the sum of its proper divisors (74745787).

523220453 is an equidigital number, since it uses as much as digits as its factorization.

523220453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74745786.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 523220453 is about 22874.0126125698. The cubic root of 523220453 is about 805.8018080015.

Adding to 523220453 its reverse (354022325), we get a palindrome (877242778).

The spelling of 523220453 in words is "five hundred twenty-three million, two hundred twenty thousand, four hundred fifty-three".