56201545 has 4 divisors (see below), whose sum is σ = 67441860. Its totient is φ = 44961232.

The previous prime is 56201533. The next prime is 56201573. The reversal of 56201545 is 54510265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54510265 = 5 ⋅10902053.

It can be written as a sum of positive squares in 2 ways, for example, as 8922169 + 47279376 = 2987^2 + 6876^2 .

It is a cyclic number.

It is not a de Polignac number, because 56201545 - 2⁵ = 56201513 is a prime.

It is a super-2 number, since 2×56201545² = 6317227320774050, which contains 22 as substring.

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, 5620150 + ... + 5620159.

It is an arithmetic number, because the mean of its divisors is an integer number (16860465).

Almost surely, 2^56201545 is an apocalyptic number.

It is an amenable number.

56201545 is a deficient number, since it is larger than the sum of its proper divisors (11240315).

56201545 is a wasteful number, since it uses less digits than its factorization.

56201545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11240314.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 56201545 is about 7496.7689706966. The cubic root of 56201545 is about 383.0446652616.

It can be divided in two parts, 56 and 201545, that added together give a square (201601 = 449²).

The spelling of 56201545 in words is "fifty-six million, two hundred one thousand, five hundred forty-five".