56920305 has 16 divisors (see below), whose sum is σ = 98078400. Its totient is φ = 28022208.

The previous prime is 56920271. The next prime is 56920313. The reversal of 56920305 is 50302965.

It is not a de Polignac number, because 56920305 - 2¹³ = 56912113 is a prime.

It is a super-2 number, since 2×56920305² = 6479842242586050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145755 + ... + 146144.

It is an arithmetic number, because the mean of its divisors is an integer number (6129900).

Almost surely, 2^56920305 is an apocalyptic number.

It is an amenable number.

56920305 is a deficient number, since it is larger than the sum of its proper divisors (41158095).

56920305 is a wasteful number, since it uses less digits than its factorization.

56920305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291920.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 56920305 is about 7544.5546588251. The cubic root of 56920305 is about 384.6706690633.

The spelling of 56920305 in words is "fifty-six million, nine hundred twenty thousand, three hundred five".