56436145 has 4 divisors (see below), whose sum is σ = 67723380. Its totient is φ = 45148912.

The previous prime is 56436139. The next prime is 56436161. The reversal of 56436145 is 54163465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54163465 = 5 ⋅10832693.

It can be written as a sum of positive squares in 2 ways, for example, as 11048976 + 45387169 = 3324^2 + 6737^2 .

It is a cyclic number.

It is not a de Polignac number, because 56436145 - 2⁹ = 56435633 is a prime.

It is a super-2 number, since 2×56436145² = 6370076924922050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56436145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5643610 + ... + 5643619.

It is an arithmetic number, because the mean of its divisors is an integer number (16930845).

Almost surely, 2^56436145 is an apocalyptic number.

It is an amenable number.

56436145 is a deficient number, since it is larger than the sum of its proper divisors (11287235).

56436145 is a wasteful number, since it uses less digits than its factorization.

56436145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11287234.

The product of its digits is 43200, while the sum is 34.

The square root of 56436145 is about 7512.3994169639. The cubic root of 56436145 is about 383.5769017056.

The spelling of 56436145 in words is "fifty-six million, four hundred thirty-six thousand, one hundred forty-five".