503642345 has 4 divisors (see below), whose sum is σ = 604370820. Its totient is φ = 402913872.

The previous prime is 503642317. The next prime is 503642351. The reversal of 503642345 is 543246305.

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

It can be written as a sum of positive squares in 2 ways, for example, as 243110464 + 260531881 = 15592^2 + 16141^2 .

It is a cyclic number.

It is not a de Polignac number, because 503642345 - 2¹⁰ = 503641321 is a prime.

It is a super-2 number, since 2×503642345² = 507311223354198050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50364230 + ... + 50364239.

It is an arithmetic number, because the mean of its divisors is an integer number (151092705).

Almost surely, 2^503642345 is an apocalyptic number.

It is an amenable number.

503642345 is a deficient number, since it is larger than the sum of its proper divisors (100728475).

503642345 is a wasteful number, since it uses less digits than its factorization.

503642345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100728474.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 503642345 is about 22441.9772970209. The cubic root of 503642345 is about 795.6231523634.

The spelling of 503642345 in words is "five hundred three million, six hundred forty-two thousand, three hundred forty-five".