245430523 has 4 divisors (see below), whose sum is σ = 264309808. Its totient is φ = 226551240.

The previous prime is 245430517. The next prime is 245430533. The reversal of 245430523 is 325034542.

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

It is a cyclic number.

It is not a de Polignac number, because 245430523 - 2¹⁷ = 245299451 is a prime.

It is a super-2 number, since 2×245430523² = 120472283240107058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245430491 and 245430500.

It is not an unprimeable number, because it can be changed into a prime (245430533) 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 in 3 ways as a sum of consecutive naturals, for example, 9439623 + ... + 9439648.

It is an arithmetic number, because the mean of its divisors is an integer number (66077452).

Almost surely, 2^245430523 is an apocalyptic number.

245430523 is a deficient number, since it is larger than the sum of its proper divisors (18879285).

245430523 is a wasteful number, since it uses less digits than its factorization.

245430523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18879284.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 245430523 is about 15666.2223589479. Note that the first 3 decimals coincide. The cubic root of 245430523 is about 626.0987801196.

The spelling of 245430523 in words is "two hundred forty-five million, four hundred thirty thousand, five hundred twenty-three".