56353261 has 4 divisors (see below), whose sum is σ = 56381724. Its totient is φ = 56324800.

The previous prime is 56353237. The next prime is 56353277. The reversal of 56353261 is 16235365.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16235365 = 5 ⋅3247073.

It can be written as a sum of positive squares in 2 ways, for example, as 53377636 + 2975625 = 7306^2 + 1725^2 .

It is a cyclic number.

It is not a de Polignac number, because 56353261 - 2¹⁵ = 56320493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56353291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11020 + ... + 15301.

It is an arithmetic number, because the mean of its divisors is an integer number (14095431).

Almost surely, 2^56353261 is an apocalyptic number.

It is an amenable number.

56353261 is a deficient number, since it is larger than the sum of its proper divisors (28463).

56353261 is a wasteful number, since it uses less digits than its factorization.

56353261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28462.

The product of its digits is 16200, while the sum is 31.

The square root of 56353261 is about 7506.8809102050. The cubic root of 56353261 is about 383.3890317722.

It can be divided in two parts, 563 and 53261, that added together give a square (53824 = 232²).

The spelling of 56353261 in words is "fifty-six million, three hundred fifty-three thousand, two hundred sixty-one".