56430145 has 8 divisors (see below), whose sum is σ = 69368040. Its totient is φ = 44042880.

The previous prime is 56430103. The next prime is 56430149. The reversal of 56430145 is 54103465.

It is a Cunningham number, because it is equal to 7512²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 2715904 + 53714241 = 1648^2 + 7329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-56430145 is a prime.

It is a super-2 number, since 2×56430145² = 6368722529442050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56430149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137430 + ... + 137839.

It is an arithmetic number, because the mean of its divisors is an integer number (8671005).

Almost surely, 2^56430145 is an apocalyptic number.

It is an amenable number.

56430145 is a deficient number, since it is larger than the sum of its proper divisors (12937895).

56430145 is a wasteful number, since it uses less digits than its factorization.

56430145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275315.

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

The square root of 56430145 is about 7512.0000665602. Note that the first 4 decimals coincide. The cubic root of 56430145 is about 383.5633079176.

The spelling of 56430145 in words is "fifty-six million, four hundred thirty thousand, one hundred forty-five".