56450551 has 4 divisors (see below), whose sum is σ = 57407400. Its totient is φ = 55493704.

The previous prime is 56450507. The next prime is 56450593. The reversal of 56450551 is 15505465.

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 56450551 - 2¹¹ = 56448503 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 (56450851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478336 + ... + 478453.

It is an arithmetic number, because the mean of its divisors is an integer number (14351850).

Almost surely, 2^56450551 is an apocalyptic number.

56450551 is a deficient number, since it is larger than the sum of its proper divisors (956849).

56450551 is an equidigital number, since it uses as much as digits as its factorization.

56450551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956848.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 56450551 is about 7513.3581706185. The cubic root of 56450551 is about 383.6095364573.

It can be divided in two parts, 564 and 50551, that added together give a palindrome (51115).

The spelling of 56450551 in words is "fifty-six million, four hundred fifty thousand, five hundred fifty-one".