56451969 has 24 divisors (see below), whose sum is σ = 95097600. Its totient is φ = 32256504.

The previous prime is 56451929. The next prime is 56451977. The reversal of 56451969 is 96915465.

It is a happy number.

56451969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56451969 - 2¹⁹ = 55927681 is a prime.

It is a super-2 number, since 2×56451969² = 6373649607953922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56451929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6057 + ... + 12230.

It is an arithmetic number, because the mean of its divisors is an integer number (3962400).

Almost surely, 2^56451969 is an apocalyptic number.

It is an amenable number.

56451969 is a deficient number, since it is larger than the sum of its proper divisors (38645631).

56451969 is a wasteful number, since it uses less digits than its factorization.

56451969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18314 (or 18297 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 56451969 is about 7513.4525352863. The cubic root of 56451969 is about 383.6127484353.

The spelling of 56451969 in words is "fifty-six million, four hundred fifty-one thousand, nine hundred sixty-nine".