56690243 has 4 divisors (see below), whose sum is σ = 59673960. Its totient is φ = 53706528.

The previous prime is 56690237. The next prime is 56690251. The reversal of 56690243 is 34209665.

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 56690243 - 2¹⁰ = 56689219 is a prime.

It is a super-3 number, since 3×56690243³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56690143) 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, 1491830 + ... + 1491867.

It is an arithmetic number, because the mean of its divisors is an integer number (14918490).

Almost surely, 2^56690243 is an apocalyptic number.

56690243 is a deficient number, since it is larger than the sum of its proper divisors (2983717).

56690243 is a wasteful number, since it uses less digits than its factorization.

56690243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983716.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 56690243 is about 7529.2923306244. The cubic root of 56690243 is about 384.1517118813.

It can be divided in two parts, 566 and 90243, that added together give a palindrome (90809).

The spelling of 56690243 in words is "fifty-six million, six hundred ninety thousand, two hundred forty-three".