53206503 has 32 divisors (see below), whose sum is σ = 85632000. Its totient is φ = 29338848.

The previous prime is 53206501. The next prime is 53206577. The reversal of 53206503 is 30560235.

It is not a de Polignac number, because 53206503 - 2¹ = 53206501 is a prime.

It is a super-2 number, since 2×53206503² = 5661863922978018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53206501) 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, 28950 + ... + 30732.

It is an arithmetic number, because the mean of its divisors is an integer number (2676000).

Almost surely, 2^53206503 is an apocalyptic number.

53206503 is a deficient number, since it is larger than the sum of its proper divisors (32425497).

53206503 is a wasteful number, since it uses less digits than its factorization.

53206503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836 (or 1822 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 53206503 is about 7294.2787854592. The cubic root of 53206503 is about 376.1157949338.

Adding to 53206503 its reverse (30560235), we get a palindrome (83766738).

The spelling of 53206503 in words is "fifty-three million, two hundred six thousand, five hundred three".