56140453 has 4 divisors (see below), whose sum is σ = 56816928. Its totient is φ = 55463980.

The previous prime is 56140423. The next prime is 56140457. The reversal of 56140453 is 35404165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35404165 = 5 ⋅7080833.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56140453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56140457) 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, 338113 + ... + 338278.

It is an arithmetic number, because the mean of its divisors is an integer number (14204232).

Almost surely, 2^56140453 is an apocalyptic number.

It is an amenable number.

56140453 is a deficient number, since it is larger than the sum of its proper divisors (676475).

56140453 is an equidigital number, since it uses as much as digits as its factorization.

56140453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676474.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 56140453 is about 7492.6933074830. The cubic root of 56140453 is about 382.9058229997.

It can be divided in two parts, 561 and 40453, that added together give a palindrome (41014).

The spelling of 56140453 in words is "fifty-six million, one hundred forty thousand, four hundred fifty-three".