56919145 has 8 divisors (see below), whose sum is σ = 72320904. Its totient is φ = 42856704.

The previous prime is 56919133. The next prime is 56919157. The reversal of 56919145 is 54191965.

It is an interprime number because it is at equal distance from previous prime (56919133) and next prime (56919157).

It can be written as a sum of positive squares in 4 ways, for example, as 549081 + 56370064 = 741^2 + 7508^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 56919145 - 2²¹ = 54821993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56919098 and 56919107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334734 + ... + 334903.

It is an arithmetic number, because the mean of its divisors is an integer number (9040113).

Almost surely, 2^56919145 is an apocalyptic number.

It is an amenable number.

56919145 is a deficient number, since it is larger than the sum of its proper divisors (15401759).

56919145 is a wasteful number, since it uses less digits than its factorization.

56919145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669659.

The product of its digits is 48600, while the sum is 40.

The square root of 56919145 is about 7544.4777817951. The cubic root of 56919145 is about 384.6680559302.

The spelling of 56919145 in words is "fifty-six million, nine hundred nineteen thousand, one hundred forty-five".