56021755 has 8 divisors (see below), whose sum is σ = 67672224. Its totient is φ = 44520000.

The previous prime is 56021753. The next prime is 56021761. The reversal of 56021755 is 55712065.

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

It is not a de Polignac number, because 56021755 - 2¹ = 56021753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56021753) 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 7 ways as a sum of consecutive naturals, for example, 36346 + ... + 37855.

It is an arithmetic number, because the mean of its divisors is an integer number (8459028).

Almost surely, 2^56021755 is an apocalyptic number.

56021755 is a deficient number, since it is larger than the sum of its proper divisors (11650469).

56021755 is a wasteful number, since it uses less digits than its factorization.

56021755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74357.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 56021755 is about 7484.7681994835. The cubic root of 56021755 is about 382.6357727807.

The spelling of 56021755 in words is "fifty-six million, twenty-one thousand, seven hundred fifty-five".