523662442 has 4 divisors (see below), whose sum is σ = 785493666. Its totient is φ = 261831220.

The previous prime is 523662421. The next prime is 523662449. The reversal of 523662442 is 244266325.

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

It can be written as a sum of positive squares in only one way, i.e., 517517001 + 6145441 = 22749^2 + 2479^2 .

It is a super-2 number, since 2×523662442² = 548444706322806728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 523662398 and 523662407.

It is not an unprimeable number, because it can be changed into a prime (523662449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130915609 + ... + 130915612.

Almost surely, 2^523662442 is an apocalyptic number.

523662442 is a deficient number, since it is larger than the sum of its proper divisors (261831224).

523662442 is a wasteful number, since it uses less digits than its factorization.

523662442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261831223.

The product of its digits is 69120, while the sum is 34.

The square root of 523662442 is about 22883.6719518525. The cubic root of 523662442 is about 806.0286437411.

The spelling of 523662442 in words is "five hundred twenty-three million, six hundred sixty-two thousand, four hundred forty-two".